Effective June 1, 2025, the Invoice Reporting Portal (IRP) will treat invoice and document numbers as case-insensitive for Invoice Reference Number (IRN) generation. This change ensures consistency and prevents duplication by automatically converting all invoice numbers to uppercase, regardless of the original case. This aligns IRP treatment with the existing case-insensitive handling of invoice numbers in GSTR-1. Taxpayers are advised to note this change, and the GST helpdesk is available for further clarification.
Goods and Services Tax
Government of India, States and Union Territories
Advisory on Case Sensitivity in IRN Generation
Apr 4th, 2025
Dear Taxpayer,
1. 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.
2. 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.
3. The same is shared for your kind information please. For any further clarification, please reach out to the GST helpdesk.
Warm regards,
GSTN Team
