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GSTR-1 & GSTR-3B Offline Diagnostic

GST Error Report Decoder

Analyze the error JSON files generated by the GST Portal. View what went wrong with your uploaded invoices in a clear, readable table format.

100% Client-Side Private • Zero Server Upload • Instant Offline Processing

Drag & drop your GST Error JSON file here

Supports standard GSTR-1 and GSTR-3B error files downloaded from the GST Portal (.json)

or

How to Read and Fix GST Portal Error Reports

When you prepare returns using the GST Offline Tool, ERP packages (like TallyPrime, Zoho Books, or SAP), or third-party GST software, invoices are compiled into a JSON payload. When uploaded to the GST Portal, the government system executes automated batch validation. If any invoice violates statutory rules, the file status changes to "Processed with Error".

The Top 8 Most Common GSTN Error Codes and Statutory Remedies

Rather than reviewing cryptic codes manually, here is how official GSTN validation codes correspond to statutory provisions under the Central Goods and Services Tax Act, 2017:

Error Code Portal Error Description Statutory Cause Actionable ERP Remedy
RET11406 Invalid Recipient GSTIN Buyer GSTIN is cancelled, suspended, or does not exist on invoice date under Section 25. Verify the buyer format using our GSTIN Validator. If cancelled, move invoice to B2CL/B2CS.
RET11414 Duplicate Invoice Number Invoice number already exists in current FY records, violating Rule 46(b). Check if already submitted in previous month or assign a distinct suffix in ERP.
RET11409 Place of Supply (POS) Mismatch POS state code does not match IGST/CGST tax split under Section 10/12 of IGST Act. Ensure intra-state transactions match your state code or use the Place of Supply Calculator.
RET19401 Invalid HSN Code / Digit Length Failure to mention 4 or 6 digits as mandated by Notification No. 78/2020-CT. Lookup valid 4/6/8-digit tariff items in our HSN Code Lookup.
RET12401 Original Invoice Not Found (CDNR) Credit/Debit Note references an invoice number not uploaded in GSTR-1. Upload original tax invoice before submitting dependent credit/debit notes.
RET11417 Invoice Date Cannot Be Future Date Invoice date exceeds the date of return generation or upload date. Verify billing software date format (DD-MM-YYYY) and ensure invoice date ≤ current date.
ERR_CALC_MISMATCH Tax Calculation Mismatch CGST + SGST or IGST deviates by more than ₹1 from statutory rate on taxable value. Recalculate exact rate splits using our GST Calculator.
RET11419 Reverse Charge Flag Conflict Reverse charge set to 'Y' on supplies not notified under Section 9(3) of CGST Act. Review RCM liability rules with our RCM Calculator.

Next Steps for Downstream Return Compliance

Resolving GSTR-1 upload errors is critical for your customers' tax credit. If invoices remain rejected in GSTR-1, they will not populate in your buyers' auto-drafted GSTR-2B, preventing them from claiming ITC under Section 16(2)(aa). To verify how buyer accounts reconcile these statements, use our GSTR-2B reconciliation tool.

Additionally, if resolving multiple error batches delays filing beyond the 11th (for GSTR-1) or 20th (for GSTR-3B), calculate potential interest and penalty liabilities with our GST late-fee calculator. For converting full return files into spreadsheet format, try the GSTR-1 JSON to Excel converter.

Frequently Asked Questions

What does "Processed with Error" mean on the GST portal?
The "Processed with Error" status indicates that the GST portal accepted your return upload, but specific invoices or records failed validation rules (such as inactive buyer GSTINs, duplicate invoice numbers, or tax calculation mismatches). The portal processes the valid invoices while isolating failed records into a downloadable Error JSON.
Where can I find and download the GST error report JSON?
After uploading your offline JSON to GSTR-1, return to the "Upload" tab in the Returns Dashboard. Under the "Uploaded Invoices" history table, locate the batch with status "Processed with Error". Click "Generate error report", wait 5–10 minutes for the portal to generate it, and click "Download error report".
How do I fix error RET11406 (Invalid Recipient GSTIN)?
Error RET11406 occurs when the buyer GSTIN in Table 4 (B2B) is either cancelled, suspended, or not registered on the invoice date. Verify the buyer GSTIN using our offline GSTIN Validator. If the buyer is unregistered or cancelled, reclassify the invoice under B2C Large (B2CL) or B2C Small (B2CS).
How do I fix error RET11414 (Duplicate Invoice Number)?
Error RET11414 means the invoice number already exists in your GSTR-1 records for the current financial year. Under Rule 46(b) of the CGST Rules, invoice numbers must be consecutive and unique for each financial year. Verify whether the invoice was already uploaded in a previous return or assign a distinct invoice numbering sequence.
How do I fix error RET19401 (Invalid HSN Code or Length)?
Under CBIC Notification No. 78/2020-Central Tax, businesses with aggregate turnover up to ₹5 Crore must report at least 4 digits of HSN on B2B invoices. Businesses with turnover exceeding ₹5 Crore must report 6 digits. Error RET19401 occurs if the digits are truncated or the code is missing from the official tariff schedule.
Is my financial data kept confidential when using this decoder?
Yes, 100% confidential. The Taxzentic GST Error Report Decoder executes entirely on client-side JavaScript in your local browser memory. Zero bytes of your JSON payload, customer names, or invoice values are transmitted to any external server.
How to open and view a GST error report JSON in Excel?
The raw JSON downloaded from the GST portal is nested and unreadable in plain Excel. By uploading the file to our decoder, the tool unpacks the nested hierarchy and provides a one-click "Export Error Log to CSV" button that opens perfectly in Microsoft Excel and Google Sheets.
Why does the GST portal reject invoices with future dates (RET11417)?
The GST portal strictly blocks any tax invoice carrying a date later than the date of filing (Error RET11417). Review the date format in your accounting software (DD-MM-YYYY) to ensure day and month values have not been inadvertently swapped.
Can I delete a rejected invoice from the GST portal?
Records listed in the error report were never saved to the portal database in the first place. You do not need to delete them online; simply fix the faulty records in your offline software and upload only those corrected invoices.
What happens if I cannot resolve GST upload errors before the due date?
If invoice validation errors delay your GSTR-1 or GSTR-3B filing past the statutory due date (typically 11th for GSTR-1 and 20th for GSTR-3B), late fees accrue under Section 47 (₹50/day or ₹20/day for nil returns) and interest accrues at 18% p.a. under Section 50(1) on net cash tax liability.