Advisory on Case Insensitivity in IRN Generation · 04 Apr 2025
CBIC / GST advisory · 04 Apr 2025
Official record
Open source pageSummary
Check the official recordWhat changed
The Invoice Reporting Portal treats invoice and document numbers as case-insensitive for Invoice Reference Number generation starting 1 June 2025. The system converts all invoice numbers to uppercase before it generates the Invoice Reference Number. This process ensures consistency and prevents duplication. This change aligns the Invoice Reporting Portal with the GSTR-1 filing system. Taxpayers must note this change for their reporting processes.
What you must do
- Taxpayers must ensure consistency in invoice numbering as the system converts all inputs to uppercase.
Key dates
- Effective from
- 01 Jun 2025
- Effective date for case-insensitive invoice number processing
- 01 Jun 2025
Document text
Dear Taxpayer,
- This is to inform you that, effective 1st June 2025, the IRP (Invoice Reporting Portal) would treat invoice/document numbers as case-insensitive for the purpose of IRN generation.
- To ensure consistency and avoid duplication, invoice numbers reported in any format (e.g., "abc", "ABC", or "Abc") would be automatically converted to uppercase before IRN generation. This change aligns with the treatment of invoice numbers in GSTR-1, which already treats them as case-insensitive.
- The same is shared for your kind information please. For any further clarification, please reach out to the GST helpdesk.
Warm regards,
GSTN Team
Source details
- Source
- Central Board of Indirect Taxes and Customs / GST
- Type
- advisory
- Published by source
- 04 Apr 2025
- Issuing division
- GSTN Team
- Effective date
- 01 Jun 2025
- Coverage area
- indirect-tax