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Amendments of Details in GSTR 1 and Error Messages : Comprehensive Guide


GSTR 1, a monthly statement for registered taxpayers under India's Goods and Services Tax (GST), acts as a record of all your outward sales (supplies) for a specific period. Filing accurate details in this return is crucial. It forms the basis for your buyers to claim tax credits on their purchases from you.  However, mistakes happen. The ability to amend GSTR 1 allows you to rectify any errors in reported invoice details or summary values. This ensures both you and your buyers maintain tax compliance and avoid potential issues with the tax department.

Amendments in GSTR 1

A. Types of Amendments

There are two main ways to amend details in GSTR 1:

  • Invoice Level Amendments: This allows you to correct specific information on individual invoices you've reported. You can modify details like invoice value, tax rate (within permissible limits), or recipient details (if there were minor typos). However, some crucial elements like the Place of Supply (POS) can only be amended under specific conditions.
  • Summary Level Amendments: This applies to situations where you need to adjust overall tax values without modifying individual invoices. Common scenarios include correcting advances received or adjusting tax liability due to returned goods. Here, you'll amend the summarized tax figures based on the Place of Supply (POS) and tax rate applicable to the specific adjustment.

B. Time Limit for Amendments

While amendments offer flexibility, there are deadlines to keep in mind. The general rule allows you to amend GSTR-1 for a particular month until November 30th of the following year, or the filing date of your annual return (whichever comes earlier). However, there's a specific rule for revising invoice dates in amendments. If you're amending an invoice detail, the revised date cannot be later than the last day of the original invoice's tax period. For example, if you amend an invoice dated December 2023 in April 2024, the revised date cannot be after December 31st, 2023.

Common Error Messages

A. Error Categories

There are two main categories of errors you might encounter while filing GSTR 1:

  1. Invoice-Related Errors: These errors typically point to issues with specific invoice entries within your return. Here are some common examples:
  • Invalid GSTIN: This error pops up if you enter a recipient's GSTIN that doesn't exist in the GST system. Double-check the GSTIN for any typos or missing digits.
  • Mismatched Tax Rate: This occurs when the tax rate applied on an invoice doesn't match the HSN code of the supplied good or service. Refer to the HSN code list and ensure the tax rate aligns.
  • Original Invoice is Invalid: This message indicates the invoice you're trying to report might not have been uploaded to the GST portal yet. Ensure you upload the invoice before reporting it in GSTR 1.
  1. Return Filing Related Errors: These errors signal issues with the overall filing process itself. Common examples include:
  • Exceeding Filing Deadlines: This error pops up when you try to file a return after the due date. There might be penalties associated with late filing, so prioritize timely submissions.
  • Checksum Mismatch: This technical error indicates a discrepancy between your uploaded data and the format expected by the GST portal. Rectify any data entry errors or try re-uploading your data.

B. Examples of Error Messages with Explanations

Here are a few specific error messages you might encounter and how to address them:

  • Error Code: RET191114 - Date is Invalid: This indicates the invoice date you entered is earlier than your GST registration date. You can't report sales before registration. Consider filing these transactions as B2C sales instead.
  • Error Code: RET191205 - Tax amounts are not in line with the taxable value and the declared tax rate: This points to a miscalculation in tax amount based on the invoice value and tax rate. Recheck your calculations and ensure they match.

By understanding these error categories and specific examples, you can identify and rectify issues in your GSTR 1 filing more efficiently.

Tips to Avoid Errors

Filing accurate GSTR 1 returns not only ensures compliance but also saves you time and hassle in the long run. Here are some key tips to minimize errors:

  • Double-check Data Before Filing: This may seem obvious, but a thorough review is crucial. Verify details like recipient's GSTIN, invoice values, tax rates, and HSN codes for all entries. Utilize tools like accounting software or spreadsheets with built-in GST functionalities to minimize manual entry mistakes.
  • Utilize the Reconciliation Statement: The GST portal offers a reconciliation statement tool. This tool compares the data you've reported in your GSTR 1 with information your buyers have reported in their GSTR 3B. Any discrepancies are highlighted, allowing you to identify and rectify issues before final submission.
  • Understand Validation Rules of the GST Portal: The GST portal has built-in validation rules to ensure data accuracy. Familiarize yourself with these rules. They often cover aspects like valid GSTIN formats, permissible tax rate ranges for specific HSN codes, and date limitations for invoice reporting. Many GST portal user guides and online resources provide detailed explanations of these validation rules.

By implementing these simple practices, you can significantly reduce the likelihood of errors in your GSTR 1 filing. This translates to a smoother and more efficient tax compliance process for your business.


GST return file in compliance GST, filing accurate GSTR 1 happens to be the first pre-requisite. It is credited with making both the sellers and buyers get genuine tax credits. It is obvious that a human error may occur, however, GSTR 1 edit facility that enables to amendment the invoices details as well as summary values gives the chance of making mistakes Technomanager. Technological Innovations: Current and Future Impact Concisely put, this ensures the enticement of less dangerous taxes as well as an enabling environment free of any accounting headaches that may come in the future. The proper way to conduct your work with caution is to look into your data, use reconciliation tools and understand validation rules in order to minimize mistakes and enjoy the advantages of quick amendments relaxing yourself and your clients.

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