{"id":999971212,"date":"2025-03-26T10:13:36","date_gmt":"2025-03-26T03:13:36","guid":{"rendered":"https:\/\/bizzi.vn\/?p=999971212"},"modified":"2026-09-03T15:41:27","modified_gmt":"2026-09-03T08:41:27","slug":"bulk-lookup-of-electronic-input-invoices","status":"publish","type":"post","link":"https:\/\/bizzi.vn\/en\/bulk-lookup-of-electronic-input-invoices\/","title":{"rendered":"Look up electronic input invoices on the Tax Portal &amp; in bulk."},"content":{"rendered":"<article class=\"bizzi-template-page bizzi-invoice-lookup-guide\">\n<div class=\"template-sapo\">\n<p><strong>Look up electronic input invoices<\/strong> This involves checking the purchase invoice data on the tax authority&#039;s system or the issuing source to confirm the invoice&#039;s existence, the matching identification information, and the current status of the invoice being recorded.<\/p>\n<p>In reality, there are three different needs: <strong>quickly check an invoice<\/strong>, <strong>View the list of purchase invoices of the business.<\/strong> and <strong>collect\/check multiple invoices in bulk<\/strong>. Choosing the right method from the start will avoid repeatedly entering data or using software when it&#039;s not really necessary.<\/p><div id=\"ez-toc-container\" class=\"ez-toc-v2_0_85 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Index<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewbox=\"0 0 24 24\" version=\"1.2\" baseprofile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 eztoc-toggle-hide-by-default' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/bizzi.vn\/en\/bulk-lookup-of-electronic-input-invoices\/#Tra_cuu_hoa_don_dien_tu_dau_vao_o_dau\" >Where can I look up my electronic input invoices?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/bizzi.vn\/en\/bulk-lookup-of-electronic-input-invoices\/#3_cach_tra_cuu_hoa_don_dien_tu_dau_vao\" >3 ways to look up electronic input invoices<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/bizzi.vn\/en\/bulk-lookup-of-electronic-input-invoices\/#Cach_1_%E2%80%94_Tra_nhanh_mot_hoa_don_tren_Cong_Hoa_don_dien_tu\" >Method 1 \u2014 Quickly search for an invoice on the Electronic Invoice Portal<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/bizzi.vn\/en\/bulk-lookup-of-electronic-input-invoices\/#Cach_2_%E2%80%94_Dang_nhap_de_xem_danh_sach_hoa_don_mua_vao\" >Method 2 \u2014 Log in to view the list of purchase invoices<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/bizzi.vn\/en\/bulk-lookup-of-electronic-input-invoices\/#Cach_3_%E2%80%94_Thu_thap_va_kiem_tra_nhieu_hoa_don_hang_loat\" >Method 3 \u2014 Collect and check multiple invoices in bulk<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/bizzi.vn\/en\/bulk-lookup-of-electronic-input-invoices\/#Cach_tra_mot_hoa_don_tren_Cong_Hoa_don_dien_tu\" >How to look up an invoice on the Electronic Invoice Portal<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/bizzi.vn\/en\/bulk-lookup-of-electronic-input-invoices\/#Cach_xem_va_lay_danh_sach_hoa_don_mua_vao_cua_doanh_nghiep\" >How to view and retrieve a list of purchase invoices for a business.<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/bizzi.vn\/en\/bulk-lookup-of-electronic-input-invoices\/#Ket_qua_tra_cuu_hoa_don_dien_tu_cho_biet_gi\" >What do the results of the electronic invoice lookup show?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/bizzi.vn\/en\/bulk-lookup-of-electronic-input-invoices\/#Tra_cuu_kiem_tra_hop_le_va_doi_chieu_nghiep_vu_khac_nhau_the_nao\" >How are business process lookups, validation checks, and comparisons different?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/bizzi.vn\/en\/bulk-lookup-of-electronic-input-invoices\/#Hoa_don_dieu_chinh_thay_the_va_sai_thong_tin_can_hieu_the_nao\" >How should we understand adjustment invoices, replacement invoices, and invoices with incorrect information?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/bizzi.vn\/en\/bulk-lookup-of-electronic-input-invoices\/#Khong_tim_thay_hoa_don_tren_he_thong_thi_lam_gi\" >What should I do if I can&#039;t find the invoice in the system?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/bizzi.vn\/en\/bulk-lookup-of-electronic-input-invoices\/#File_XML_co_vai_tro_gi_khi_tra_cuu_hoa_don_dien_tu\" >What is the role of XML files when looking up electronic invoices?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/bizzi.vn\/en\/bulk-lookup-of-electronic-input-invoices\/#Khi_nao_doanh_nghiep_can_tra_cuu_hoa_don_dau_vao_hang_loat\" >When does a business need to look up input invoices in bulk?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"https:\/\/bizzi.vn\/en\/bulk-lookup-of-electronic-input-invoices\/#Tra_thu_cong_dang_nhap_Cong_Thue_hay_dung_phan_mem\" >Should I look it up manually, log in to the Tax Portal, or use software?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-15\" href=\"https:\/\/bizzi.vn\/en\/bulk-lookup-of-electronic-input-invoices\/#Tu_tra_cuu_hoa_don_den_kiem_soat_hoa_don_dau_vao_tu_dong\" >From invoice lookup to automated input invoice control.<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-16\" href=\"https:\/\/bizzi.vn\/en\/bulk-lookup-of-electronic-input-invoices\/#FAQ_ve_tra_cuu_hoa_don_dien_tu_dau_vao\" >FAQ regarding looking up electronic input invoices<\/a><\/li><\/ul><\/nav><\/div>\n\n<\/div>\n<aside aria-label=\"Summary of how to look up electronic input invoices\" class=\"bizzi-answer\">\n<strong>Quick summary:<\/strong><\/p>\n<ul>\n<li><strong>Look up an invoice:<\/strong> Use the public lookup function on the Tax Department&#039;s Electronic Invoice Portal.<\/li>\n<li><strong>View the company&#039;s purchase invoices:<\/strong> Log in to the e-invoice portal with an account that has the appropriate permissions, then filter by period.<\/li>\n<li><strong>Batch testing:<\/strong> Suitable for businesses that need to collect, detect duplicates\/anomalies, reconcile documents, or synchronize data with ERP\/accounting systems.<\/li>\n<\/ul>\n<p><strong>Search portal:<\/strong> <a href=\"https:\/\/hoadondientu.gdt.gov.vn\/tra-cuu\/tra-cuu-hoa-don\" rel=\"noopener noreferrer nofollow\" target=\"_blank\">hoadondientu.gdt.gov.vn\/tra-cuu\/tra-cuu-hoa-don<\/a><\/p>\n<\/aside>\n<aside aria-label=\"Legal updates on electronic invoices 2026\" class=\"bizzi-callout bizzi-callout-warning\">\n<strong>Updated as of July 1, 2026:<\/strong><\/p>\n<p>The legal framework for electronic invoices and electronic documents is implemented according to Law No. 108\/2025\/QH15 on Tax Administration, Decree 254\/2026\/ND-CP, and Circular 91\/2026\/TT-BTC. If a business is currently using a checklist based solely on Decree 123\/2020\/ND-CP and Circular 78\/2021\/TT-BTC, it needs to update it to the current legal basis.<\/p>\n<p>If you need to see the detailed legal changes, see <a href=\"https:\/\/bizzi.vn\/nghi-dinh-254-thong-tu-91-ve-hoa-don-dien-tu-diem-moi-va-doanh-nghiep-can-cap-nhat-gi\/\">Decree 254 and Circular 91 on electronic invoices<\/a>.<\/p>\n<\/aside>\n<section aria-labelledby=\"heading-tra-cuu-o-dau\" class=\"template-section\" id=\"tra-cuu-o-dau\">\n<h2 id=\"heading-tra-cuu-o-dau\"><span class=\"ez-toc-section\" id=\"Tra_cuu_hoa_don_dien_tu_dau_vao_o_dau\"><\/span>Where can I look up my electronic input invoices?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><strong>For electronic invoice data belonging to the tax authority&#039;s system, businesses should start from the Tax Department&#039;s Electronic Invoice Portal at hoadondientu.gdt.gov.vn.<\/strong> From here, users can look up an invoice using the public function or log in to access data within their assigned account.<\/p>\n<div aria-label=\"Places where you can look up electronic input invoices\" class=\"bizzi-table-wrap\" role=\"region\" tabindex=\"0\">\n<table>\n<thead>\n<tr>\n<th scope=\"col\">Search location<\/th>\n<th scope=\"col\">When to use<\/th>\n<th scope=\"col\">Points to note<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<th scope=\"row\">Tax Department&#039;s Electronic Invoice Portal<\/th>\n<td>Verify invoice data on the tax system; view purchase data when the account has the appropriate permissions.<\/td>\n<td>Public and post-login functions serve different purposes.<\/td>\n<\/tr>\n<tr>\n<th scope=\"row\">Website\/app of the organization providing e-invoicing solutions.<\/th>\n<td>Look up the invoice issued by the supplier on their system.<\/td>\n<td>You must use the correct link or lookup code provided by the publisher.<\/td>\n<\/tr>\n<tr>\n<th scope=\"row\">Internal system \/ AP software<\/th>\n<td>Businesses need to centralize invoices from multiple sources, perform batch audits, and connect accounting\/ERP data.<\/td>\n<td>This is a data and process management layer, not a replacement for the data role of the tax authority.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<aside class=\"bizzi-callout\">\n<strong>Don&#039;t confuse &quot;public lookup&quot; with &quot;viewing all purchase invoices&quot;.<\/strong><\/p>\n<p>Publicly available lookups are suitable when needing to verify a specific document. Accessing a company&#039;s own list of purchase invoices typically requires logging in and depends on account access permissions.<\/p>\n<\/aside>\n<p>If you need to differentiate the concept, role, and scope of documents before searching, please refer to the article. <a href=\"https:\/\/bizzi.vn\/hoa-don-dau-vao-la-gi\/\">What is an input invoice?<\/a>.<\/p>\n<\/section>\n<section aria-labelledby=\"heading-ba-cach\" class=\"template-section\" id=\"ba-cach-tra-cuu\">\n<h2 id=\"heading-ba-cach\"><span class=\"ez-toc-section\" id=\"3_cach_tra_cuu_hoa_don_dien_tu_dau_vao\"><\/span>3 ways to look up electronic input invoices<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>The three methods below address three different tasks. A single procedure should not be used for all cases.<\/p>\n<figure class=\"bizzi-figure bizzi-visual\">\n<img loading=\"lazy\" alt=\"There are three ways to look up electronic input invoices: look up a single invoice, view the purchase list, and check multiple invoices.\" decoding=\"async\" height=\"675\" src=\"https:\/\/bizzi.vn\/wp-content\/uploads\/2026\/09\/bizzi-3-cach-tra-cuu-hoa-don-dau-vao-1.webp\" width=\"1200\" title=\"\"><figcaption>Choose the method based on scale and purpose: look up a single invoice, view a purchase list, or perform a batch check.<\/figcaption><\/figure>\n<h3><span class=\"ez-toc-section\" id=\"Cach_1_%E2%80%94_Tra_nhanh_mot_hoa_don_tren_Cong_Hoa_don_dien_tu\"><\/span>Method 1 \u2014 Quickly search for an invoice on the Electronic Invoice Portal<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>This is suitable when accountants need to verify a specific invoice before proceeding to review records, record transactions, or move on to the transaction reconciliation step.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Cach_2_%E2%80%94_Dang_nhap_de_xem_danh_sach_hoa_don_mua_vao\"><\/span>Method 2 \u2014 Log in to view the list of purchase invoices<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>This is useful when businesses need to review invoices on a monthly\/quarterly basis, compare purchase lists, or find invoices that suppliers have issued to the business.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Cach_3_%E2%80%94_Thu_thap_va_kiem_tra_nhieu_hoa_don_hang_loat\"><\/span>Method 3 \u2014 Collect and check multiple invoices in bulk<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Suitable for situations with a large volume of invoices, documents coming from multiple emails\/suppliers\/branches, or when accountants need to detect duplicates, alert on unusual data, and send results to the AP\/ERP process.<\/p>\n<\/section>\n<section aria-labelledby=\"heading-tra-mot-hoa-don\" class=\"template-section\" id=\"tra-mot-hoa-don\">\n<h2 id=\"heading-tra-mot-hoa-don\"><span class=\"ez-toc-section\" id=\"Cach_tra_mot_hoa_don_tren_Cong_Hoa_don_dien_tu\"><\/span>How to look up an invoice on the Electronic Invoice Portal<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><strong>To check a specific invoice, access the invoice lookup function on the e-invoice portal and fill in the fields requested by the system.<\/strong> The interface may change with each upgrade, so it&#039;s advisable to read the field labels on the gate instead of relying entirely on old guide images.<\/p>\n<ol class=\"bizzi-step-list\">\n<li><strong>Access the Electronic Invoice Portal:<\/strong> Open the invoice lookup page.<\/li>\n<li><strong>Choose the appropriate search function:<\/strong> Use public lookup when checking only one invoice.<\/li>\n<li><strong>Enter identification information:<\/strong> The system may require the seller&#039;s tax identification number, invoice type, symbol, invoice number, and authentication code, or other related fields.<\/li>\n<li><strong>Perform a search:<\/strong> Check the returned results instead of just comparing a single field.<\/li>\n<li><strong>Save the necessary information:<\/strong> If the invoice needs to proceed to the accounting\/AP process, save the relevant XML\/document according to internal procedures.<\/li>\n<\/ol>\n<figure class=\"bizzi-figure bizzi-original-media\">\n<img loading=\"lazy\" alt=\"Electronic invoice lookup interface on the tax authority&#039;s system.\" decoding=\"async\" height=\"725\" src=\"https:\/\/bizzi.vn\/wp-content\/uploads\/2025\/03\/Screen-Shot-2026-07-02-at-22.24.02.png\" width=\"1200\" title=\"\"><figcaption>Screenshot of the search interface as of July 2nd, 2026. Please compare this with the live interface before publishing as the system may be upgraded.<\/figcaption><\/figure>\n<aside class=\"bizzi-callout\">\n<strong>Being able to retrieve the information does not mean the entire invoice verification process is complete.<\/strong><\/p>\n<p>The lookup results show the data and invoice status provided by the system. Accountants still need to check the content, XML\/signatures (if appropriate), and transaction documents before making conclusions about accounting, reporting, or payment.<\/p>\n<\/aside>\n<\/section>\n<section aria-labelledby=\"heading-xem-mua-vao\" class=\"template-section\" id=\"xem-hoa-don-mua-vao\">\n<h2 id=\"heading-xem-mua-vao\"><span class=\"ez-toc-section\" id=\"Cach_xem_va_lay_danh_sach_hoa_don_mua_vao_cua_doanh_nghiep\"><\/span>How to view and retrieve a list of purchase invoices for a business.<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><strong>If the goal is to view all purchase invoices for a period, businesses need to log in to the Electronic Invoice Portal with an account that has the appropriate permissions and then use the purchase invoice lookup function.<\/strong><\/p>\n<ol class=\"bizzi-step-list\">\n<li>Access the Electronic Invoice Portal.<\/li>\n<li>Log in using your authorized business account.<\/li>\n<li>Enter the area <strong>Lookup<\/strong> and select the function related to purchase invoices.<\/li>\n<li>Select the time period to check; add status filters or other information if the interface supports it.<\/li>\n<li>Perform a search and review the list of results.<\/li>\n<li>Export\/load data according to the system&#039;s provided functions and save it according to internal procedures.<\/li>\n<\/ol>\n<figure class=\"bizzi-figure bizzi-original-media\"><img fetchpriority=\"high\" decoding=\"async\" alt=\"Reference interface for searching electronic purchase invoices on the tax system.\" height=\"698\" src=\"https:\/\/bizzi.vn\/wp-content\/uploads\/2025\/03\/thue-dien-tu.webp\" width=\"1200\" title=\"\"><figcaption>The image is a reference to the original interface. In actual operation, prioritize the labels and functions currently displayed on the E-Invoice Portal because the interface may be updated.<\/figcaption><\/figure>\n<aside class=\"bizzi-callout bizzi-callout-warning\">\n<strong>Menu names and data export functions may change.<\/strong><\/p>\n<p>Avoid hardcoding instructions to follow an outdated interface. When updating posts, prioritize maintaining the logical workflow: log in \u2192 select purchase lookup \u2192 filter period \u2192 view results \u2192 load\/export if the current functionality supports it.<\/p>\n<\/aside>\n<\/section>\n<section aria-labelledby=\"heading-ket-qua\" class=\"template-section\" id=\"ket-qua-tra-cuu\">\n<h2 id=\"heading-ket-qua\"><span class=\"ez-toc-section\" id=\"Ket_qua_tra_cuu_hoa_don_dien_tu_cho_biet_gi\"><\/span>What do the results of the electronic invoice lookup show?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>According to Circular 91\/2026\/TT-BTC, the electronic invoice information provided by the tax authority includes the invoice contents as prescribed and <strong>electronic invoice status<\/strong>. Therefore, buyers should use the lookup results to determine how the data is being recorded by the system before moving on to the next verification step.<\/p>\n<div aria-label=\"How to read the results of electronic input invoice lookup\" class=\"bizzi-table-wrap\" role=\"region\" tabindex=\"0\">\n<table>\n<thead>\n<tr>\n<th scope=\"col\">Results\/phenomena<\/th>\n<th scope=\"col\">Understanding safety<\/th>\n<th scope=\"col\">Next step<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<th scope=\"row\">Invoice found, information matches.<\/th>\n<td>The system has data that matches the information entered.<\/td>\n<td>Further review the invoice content, XML\/signatures when necessary, and business documents.<\/td>\n<\/tr>\n<tr>\n<th scope=\"row\">Not found<\/th>\n<td>There is insufficient evidence to conclude that the invoice does not exist or is invalid.<\/td>\n<td>Double-check the data entry, lookup function, data timing, and confirm with the seller.<\/td>\n<\/tr>\n<tr>\n<th scope=\"row\">There is a regulating relationship.<\/th>\n<td>The invoice has related adjustment documents; both the original invoice and the adjustment invoice need to be reviewed.<\/td>\n<td>Determine the adjustments to be made and handle the accounting\/tax matters according to the specific circumstances.<\/td>\n<\/tr>\n<tr>\n<th scope=\"row\">There is a replacement invoice.<\/th>\n<td>The seller issued a new invoice to replace the incorrect one in accordance with current legal procedures.<\/td>\n<td>Determine the relationship between the two invoices and use the correct set of documents for the next transaction.<\/td>\n<\/tr>\n<tr>\n<th scope=\"row\">The buyer\/seller information is incorrect.<\/th>\n<td>It is necessary to identify the type of error; not all errors can be handled in the same way.<\/td>\n<td>Compare with the seller and check the handling procedure according to Circular 91\/2026\/TT-BTC.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/section>\n<section aria-labelledby=\"heading-tra-cuu-khac-kiem-tra\" class=\"template-section\" id=\"tra-cuu-khac-kiem-tra\">\n<h2 id=\"heading-tra-cuu-khac-kiem-tra\"><span class=\"ez-toc-section\" id=\"Tra_cuu_kiem_tra_hop_le_va_doi_chieu_nghiep_vu_khac_nhau_the_nao\"><\/span>How are business process lookups, validation checks, and comparisons different?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><strong>These are three different layers of control.<\/strong> Verify data on the system; check the validity and evaluate the content\/documents; and compare the actual transaction confirmation with the purchase records.<\/p>\n<figure class=\"bizzi-figure bizzi-visual\">\n<img loading=\"lazy\" alt=\"Distinguishing between invoice lookup, validity check, and transaction reconciliation.\" decoding=\"async\" height=\"675\" src=\"https:\/\/bizzi.vn\/wp-content\/uploads\/2026\/09\/bizzi-tra-cuu-khac-kiem-tra-hop-le-doi-chieu.webp\" width=\"1200\" title=\"\"><figcaption>The three layers of control should be clearly separated before accounting, reporting, or payment.<\/figcaption><\/figure>\n<div aria-label=\"Distinguishing between invoice validity verification and invoice comparison.\" class=\"bizzi-table-wrap\" role=\"region\" tabindex=\"0\">\n<table>\n<thead>\n<tr>\n<th scope=\"col\">Control layer<\/th>\n<th scope=\"col\">Question<\/th>\n<th scope=\"col\">Example data<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<th scope=\"row\">Lookup<\/th>\n<td>Has the invoice appeared, and how is its status being recorded in the system?<\/td>\n<td>Tax identification number (MST), symbol, invoice number, data status.<\/td>\n<\/tr>\n<tr>\n<th scope=\"row\">Validity check<\/th>\n<td>Do the contents and supporting documents meet the requirements applicable to this case?<\/td>\n<td>XML, signatures, required fields, modifier\/replacement relationships.<\/td>\n<\/tr>\n<tr>\n<th scope=\"row\">Business comparison<\/th>\n<td>Does the invoice match the order placed, received, and approved?<\/td>\n<td>Purchase Order (PO)\/contract, Grand Acceptance Report (GR), Invoice, limit\/approval.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p>If a more in-depth assessment of the second layer is needed, see the guide. <a href=\"https:\/\/bizzi.vn\/cach-kiem-tra-hoa-don-dien-tu-hop-le\/\">How to check if an electronic invoice is valid<\/a>.<\/p>\n<p>If the business needs to verify purchases before payment, please refer to the following. <a href=\"https:\/\/bizzi.vn\/3-way-matching-la-gi\/\">3-way matching PO \u2013 GR \u2013 Invoice<\/a>.<\/p>\n<\/section>\n<section aria-labelledby=\"heading-dieu-chinh-thay-the\" class=\"template-section\" id=\"dieu-chinh-thay-the\">\n<h2 id=\"heading-dieu-chinh-thay-the\"><span class=\"ez-toc-section\" id=\"Hoa_don_dieu_chinh_thay_the_va_sai_thong_tin_can_hieu_the_nao\"><\/span>How should we understand adjustment invoices, replacement invoices, and invoices with incorrect information?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><strong>&quot;Adjustment&quot; and &quot;replacement&quot; should not be considered the same state.<\/strong> From July 1st, 2026, Article 10 of Circular 91\/2026\/TT-BTC stipulates how to handle incorrectly issued invoices according to different error categories.<\/p>\n<div aria-label=\"Distinguishing between adjustment invoices and replacement invoices.\" class=\"bizzi-table-wrap\" role=\"region\" tabindex=\"0\">\n<table>\n<thead>\n<tr>\n<th scope=\"col\">General case<\/th>\n<th scope=\"col\">Possible solutions may arise.<\/th>\n<th scope=\"col\">What should buyers do when searching for information?<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<th scope=\"row\">Some errors do not affect the tax identification number, amount, tax rate, tax amount, or goods.<\/th>\n<td>The seller may notify the seller of an error without having to reissue the invoice, subject to the regulations.<\/td>\n<td>Check the relevant notices and records instead of assuming a new invoice is required.<\/td>\n<\/tr>\n<tr>\n<th scope=\"row\">Incorrect tax identification number (MST), goods\/specifications, amount, tax rate, tax amount, or other mandatory information falling under the prescribed category.<\/th>\n<td>The seller may choose to adjust or replace the item in accordance with Article 10 of Circular 91.<\/td>\n<td>Clearly identify which method the seller has chosen and correctly interpret the relationship between the old and new documents.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p>This article only explains how to read the lookup results. For specific error handling, please refer to Decree 254 and Circular 91 on electronic invoices.<\/p>\n<\/section>\n<section aria-labelledby=\"heading-khong-tim-thay\" class=\"template-section\" id=\"khong-tim-thay\">\n<h2 id=\"heading-khong-tim-thay\"><span class=\"ez-toc-section\" id=\"Khong_tim_thay_hoa_don_tren_he_thong_thi_lam_gi\"><\/span>What should I do if I can&#039;t find the invoice in the system?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><strong>The fact that no results were found should not be immediately interpreted as the invoice not existing or being invalid.<\/strong> Please rule out data errors and lookup function malfunctions first.<\/p>\n<figure class=\"bizzi-figure bizzi-visual\">\n<img loading=\"lazy\" alt=\"Checklist for handling cases where electronic invoices are not found in the system.\" decoding=\"async\" height=\"675\" src=\"https:\/\/bizzi.vn\/wp-content\/uploads\/2026\/09\/bizzi-khong-tim-thay-hoa-don-checklist.webp\" width=\"1200\" title=\"\"><figcaption>The order of checking when the system hasn&#039;t returned the desired invoice.<\/figcaption><\/figure>\n<ol class=\"bizzi-checklist\">\n<li><strong>Check the information you have entered:<\/strong> Seller&#039;s tax identification number (MST), invoice type, symbol, invoice number, and other system-required fields.<\/li>\n<li><strong>Check for proper functionality:<\/strong> Publicly look up a different invoice than the purchase lookup area after logging in.<\/li>\n<li><strong>Check the time:<\/strong> With newly generated invoices, the data transmission\/recording process on the system needs to be considered.<\/li>\n<li><strong>Check the relationship between the documents:<\/strong> The invoice may have undergone adjustments\/replacements or may have related documents that need to be reviewed.<\/li>\n<li><strong>Confirm with the seller:<\/strong> Compare the XML\/PDF with the information that the seller has created\/sent.<\/li>\n<li><strong>Leave a record of the process:<\/strong> If the invoice affects accounting, payment, or reporting, retain the verification results and communicate the relevant information.<\/li>\n<\/ol>\n<\/section>\n<section aria-labelledby=\"heading-xml\" class=\"template-section\" id=\"vai-tro-xml\">\n<h2 id=\"heading-xml\"><span class=\"ez-toc-section\" id=\"File_XML_co_vai_tro_gi_khi_tra_cuu_hoa_don_dien_tu\"><\/span>What is the role of XML files when looking up electronic invoices?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><strong>XML is a structured data file for electronic invoices and is very useful when accountants need to read, store, or reconcile data fields in a machine-readable format.<\/strong> PDFs are primarily convenient for viewing; XML, on the other hand, allows software systems to read and process more detailed data.<\/p>\n<p>When an invoice is unreachable or the displayed data differs, the XML provided by the seller serves as a reference source alongside information on the e-invoice portal and transaction records. However, some XML files do not automatically answer all questions regarding accounting or tax conditions.<\/p>\n<\/section>\n<section aria-labelledby=\"heading-hang-loat\" class=\"template-section\" id=\"khi-nao-tra-hang-loat\">\n<h2 id=\"heading-hang-loat\"><span class=\"ez-toc-section\" id=\"Khi_nao_doanh_nghiep_can_tra_cuu_hoa_don_dau_vao_hang_loat\"><\/span>When does a business need to look up input invoices in bulk?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><strong>Businesses should evaluate their batch processes when the bottleneck is no longer &quot;finding an invoice,&quot; but rather collecting enough invoices, ensuring consistency, and handling exceptions in large quantities.<\/strong><\/p>\n<div class=\"bizzi-key-points\">\n<div><strong>Multiple sources<\/strong><span>Supplier email, XML\/PDF, tax system, branch.<\/span><\/div>\n<div><strong>Multiple suppliers<\/strong><span>It&#039;s difficult to control naming conventions, tax identification numbers (MST), invoice templates, and incoming data.<\/span><\/div>\n<div><strong>Disinfection is needed.<\/strong><span>An invoice may be sent through multiple channels or processed by multiple people.<\/span><\/div>\n<div><strong>Comparison needed<\/strong><span>Not only look up the information but also compare it with the Purchase Order (PO) and Grand Acceptance Report (GR)\/acceptance documents.<\/span><\/div>\n<div><strong>History needs to be recorded.<\/strong><span>Traces are required for verification, error correction, and approval.<\/span><\/div>\n<div><strong>ERP\/accounting system needed.<\/strong><span>The data after verification needs to be transferred to the accounting system or ERP system.<\/span><\/div>\n<\/div>\n<p>There is no threshold for &quot;how many invoices require software.&quot; The decision should be based on processing time, number of data sources, exception rate, duplicate control capabilities, and actual integration requirements.<\/p>\n<p>When the problem has expanded from &quot;research&quot; to receiving, checking, approving, accounting, paying, and storing data, the design should follow these guidelines. <a href=\"https:\/\/bizzi.vn\/quan-ly-hoa-don-dau-vao-dao-ra\/\">input invoice management process<\/a> instead of continuing to add more checklists manually.<\/p>\n<\/section>\n<section aria-labelledby=\"heading-chon-cach\" class=\"template-section\" id=\"chon-cach\">\n<h2 id=\"heading-chon-cach\"><span class=\"ez-toc-section\" id=\"Tra_thu_cong_dang_nhap_Cong_Thue_hay_dung_phan_mem\"><\/span>Should I look it up manually, log in to the Tax Portal, or use software?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>The three options are not mutually exclusive. Businesses can use public lookup for individual situations, the e-invoice portal to view purchase data, and software to organize large-scale verification processes.<\/p>\n<div aria-label=\"Comparing three methods for looking up input invoices.\" class=\"bizzi-table-wrap\" role=\"region\" tabindex=\"0\">\n<table>\n<thead>\n<tr>\n<th scope=\"col\">Criteria<\/th>\n<th scope=\"col\">Look up an invoice<\/th>\n<th scope=\"col\">View the list of buy orders on the Electronic Contract Portal.<\/th>\n<th scope=\"col\">Mass automation<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<th scope=\"row\">Target<\/th>\n<td>Quickly check the specific documents.<\/td>\n<td>Review purchase invoices by period.<\/td>\n<td>Data collection + verification + reconciliation + exception handling.<\/td>\n<\/tr>\n<tr>\n<th scope=\"row\">Log in<\/th>\n<td>It doesn&#039;t necessarily have to be for public use.<\/td>\n<td>Appropriate account\/permissions are required.<\/td>\n<td>Depending on system configuration and data connection.<\/td>\n<\/tr>\n<tr>\n<th scope=\"row\">Mass<\/th>\n<td>Short.<\/td>\n<td>By period\/company.<\/td>\n<td>Suitable for high volume or multiple sources.<\/td>\n<\/tr>\n<tr>\n<th scope=\"row\">Duplicate\/Abnormal Detection<\/th>\n<td>Manual inspection.<\/td>\n<td>Further action is needed.<\/td>\n<td>Rules\/alerts can be set up.<\/td>\n<\/tr>\n<tr>\n<th scope=\"row\">Compare PO\/GR<\/th>\n<td>Are not.<\/td>\n<td>Not the main objective.<\/td>\n<td>It can be integrated into the AP process.<\/td>\n<\/tr>\n<tr>\n<th scope=\"row\">ERP\/accounting<\/th>\n<td>Manual data import\/transfer.<\/td>\n<td>Load\/export and then process further depending on the function.<\/td>\n<td>It is possible to connect and synchronize according to the system design.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p>If your business is evaluating how to transition from manual audits to a data-centric workflow, see more. <a href=\"https:\/\/bizzi.vn\/tu-dong-hoa-xu-ly-hoa-don-dau\/\">Automated process for handling input invoices<\/a>.<\/p>\n<\/section>\n<section aria-labelledby=\"heading-bizzi\" class=\"template-section\" id=\"bizzi-tra-cuu-hang-loat\">\n<h2 id=\"heading-bizzi\"><span class=\"ez-toc-section\" id=\"Tu_tra_cuu_hoa_don_den_kiem_soat_hoa_don_dau_vao_tu_dong\"><\/span>From invoice lookup to automated input invoice control.<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><strong>For businesses with a large volume of invoices, lookup is just one step in the AP process.<\/strong> After collecting invoices, accountants must also check the data, detect duplicates\/risks, compare them with purchase documents, and transfer the results to the accounting system or ERP.<\/p>\n<p>If the bottleneck lies in the step of transferring post-audit data to the financial system, a separate solution may be considered. <a href=\"https:\/\/bizzi.vn\/tich-hop-erp\/\">Integrating Bizz with ERP<\/a> To separate the system connectivity problem from the lookup problem.<\/p>\n<aside class=\"bizzi-commercial-bridge\">\n<strong>Bizzi supports the input invoice processing layer after the lookup step.<\/strong><\/p>\n<p>According to the current product documentation, Bizzi can collect invoices from tax authority lookup systems and supplier emails, check invoice data, alert on risks, reconcile invoices \u2013 purchase orders \u2013 gross receipts, and integrate data with ERP\/accounting software.<\/p>\n<p>Key distinction: Bizzi does not replace the tax authority&#039;s e-invoicing portal. The value of the automation layer lies in its ability to... <strong>Centralize data, reduce repetitive operations, and integrate lookup\/check results into a controlled AP process.<\/strong>.<\/p>\n<p><a class=\"bizzi-button\" href=\"https:\/\/bizzi.vn\/xu-ly-hoa-don\/\">View solutions for handling input invoices.<\/a><\/p>\n<\/aside>\n<\/section>\n<section aria-labelledby=\"heading-faq\" class=\"template-section bizzi-faq\" id=\"faq\">\n<h2 id=\"heading-faq\"><span class=\"ez-toc-section\" id=\"FAQ_ve_tra_cuu_hoa_don_dien_tu_dau_vao\"><\/span>FAQ regarding looking up electronic input invoices<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<details>\n<summary>Is it possible to look up electronic input invoices without logging in?<\/summary>\n<div>\n<p>A specific invoice can be searched using the public function on the E-Invoice Portal based on the system&#039;s requested information. However, to view the list of purchase invoices belonging to a business, users usually need to log in with an account that has appropriate permissions.<\/p>\n<\/div>\n<\/details>\n<details>\n<summary>Where can I view my business&#039;s input invoices?<\/summary>\n<div>\n<p>Access the Tax Department&#039;s Electronic Invoice Portal at hoadondientu.gdt.gov.vn, log in, and use the function to search for purchase invoices according to your account&#039;s permissions.<\/p>\n<\/div>\n<\/details>\n<details>\n<summary>If the invoice cannot be found in the tax system, does that mean the invoice is invalid?<\/summary>\n<div>\n<p>It&#039;s too early to jump to conclusions. The input information needs to be checked again, ensuring the correct lookup function, data timing, adjustment\/replacement relationships, and confirmation with the seller. Validity also needs to be assessed at other levels besides the lookup process.<\/p>\n<\/div>\n<\/details>\n<details>\n<summary>Are adjustment invoices and replacement invoices the same thing?<\/summary>\n<div>\n<p>No. These are two different ways of handling certain types of errors according to Circular 91\/2026\/TT-BTC. When checking, the buyer needs to clearly identify which method the seller used and the relationship between the new document and the previously issued invoice.<\/p>\n<\/div>\n<\/details>\n<details>\n<summary>Is the XML file important when verifying electronic invoices?<\/summary>\n<div>\n<p>Yes. XML is a structured data file that helps software and accountants read\/match invoice fields. However, having XML does not automatically qualify it for all accounting or tax purposes.<\/p>\n<\/div>\n<\/details>\n<details>\n<summary>Is it possible to look up invoices in bulk directly on the Tax Portal?<\/summary>\n<div>\n<p>Logged-in users can access the invoice list within the functionalities provided by the system. If the business requires additional multi-source data collection, duplicate checking, risk alerts, PO\/GR reconciliation, and ERP synchronization, then that&#039;s a broader process automation solution.<\/p>\n<\/div>\n<\/details>\n<\/section>\n<aside aria-label=\"Sign up for a Bizzi demo.\" class=\"bizzi-cta\">\n<strong>When manual lookup is no longer the only bottleneck.<\/strong><\/p>\n<p>If the AP team is currently collecting invoices from multiple sources, checking for duplicates, matching purchase orders (PO), general merchandise prices (GR), and invoices, and re-entering the data into the ERP system, they might consider automating the process instead of continuing to expand the manual checklist.<\/p>\n<p><a class=\"bizzi-button\" href=\"https:\/\/bizzi.vn\/dat-lich-demo\/\">Schedule a Bizzi demo<\/a><\/p>\n<\/aside>\n<\/article>\n<\/p>","protected":false},"excerpt":{"rendered":"<p>Tra c\u1ee9u h\u00f3a \u0111\u01a1n \u0111i\u1ec7n t\u1eed \u0111\u1ea7u v\u00e0o l\u00e0 b\u01b0\u1edbc ki\u1ec3m tra d\u1eef li\u1ec7u h\u00f3a \u0111\u01a1n mua v\u00e0o tr\u00ean h\u1ec7 th\u1ed1ng c\u1ee7a c\u01a1 quan thu\u1ebf&#8230;<\/p>","protected":false},"author":56,"featured_media":999971221,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"content-type":"","inline_featured_image":false,"footnotes":""},"categories":[263,85,367],"tags":[],"class_list":["post-999971212","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-kien-thuc","category-kiem-soat","category-quy-trinh-phai-tra"],"acf":[],"_links":{"self":[{"href":"https:\/\/bizzi.vn\/en\/wp-json\/wp\/v2\/posts\/999971212","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/bizzi.vn\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/bizzi.vn\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/bizzi.vn\/en\/wp-json\/wp\/v2\/users\/56"}],"replies":[{"embeddable":true,"href":"https:\/\/bizzi.vn\/en\/wp-json\/wp\/v2\/comments?post=999971212"}],"version-history":[{"count":16,"href":"https:\/\/bizzi.vn\/en\/wp-json\/wp\/v2\/posts\/999971212\/revisions"}],"predecessor-version":[{"id":999982228,"href":"https:\/\/bizzi.vn\/en\/wp-json\/wp\/v2\/posts\/999971212\/revisions\/999982228"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/bizzi.vn\/en\/wp-json\/wp\/v2\/media\/999971221"}],"wp:attachment":[{"href":"https:\/\/bizzi.vn\/en\/wp-json\/wp\/v2\/media?parent=999971212"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/bizzi.vn\/en\/wp-json\/wp\/v2\/categories?post=999971212"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/bizzi.vn\/en\/wp-json\/wp\/v2\/tags?post=999971212"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}