| 2150 | An invoice with this Invoice Reference Number (IRN) already exists | Create a new invoice. |
| 2154 | Invoice details for the requested Invoice Reference Number (IRN) are not available with GSTIN. Enter a valid IRN. | Enter a valid Invoice Reference Number (IRN) and try again. |
| 2155 | Supplier GSTIN is missing in the e-document Enter the supplier GSTIN and try again. | Enter the supplier GSTIN and try again. |
| 2156 | Incorrect date format. Enter the date in DD/ MM/YYYY format. | Verify the start date format of the transaction It must be in DD/MM/YYYY format. |
| 2157 | Incorrect date format. Enter the date in DD/ MM/YYYY format. | Verify the end date format of the transaction It must be in DD/MM/YYYY format. |
| 2159 | Invalid value in the Reverse Charge Applicable field If reverse charge is applicable enter Y, else enter N. | If reverse charge is applicable enter Y, else enter Null |
| 2161 | Invalid value in the Document Type field Valid values of this field are INV. CRN and DBN. | Valid values of this field are INV, CRN, and DBN. |
| 2162 | Reverse charge is applicable only for B2B invoices Verify tax codes and the vendor or customer registration type in the transaction | Verify tax codes and the vendor or customer registration type in the transaction |
| 2163 | Invalid transaction date. The transaction date must be older than or same as the current date. | Verify the transaction date in the generated e- document |
| 2169 | Invalid GSTIN GSTIN used to log in must match supplier or ecommerce GSTIN. | Verify the login GSTIN It cannot be the same as the buyer GSTIN. |
| 2171 | For deemed exports buyer GSTIN cannot be Unregistered Person (URP). Verify supply type code and buyer GSTIN. When supply type is DEXP buyer GSTIN cannot be URP | Verify supply type code and buyer GSTIN When supply type is DEXP, buyer GSTIN cannot be URP. |
| 2172 | For intra state transaction IGST Amounts are not applicable for item {0} Only Cgst and Sgst Amounts are applicable. | Verify the tax code and tax types in the transaction and the generated e-document |
| 2173 | You have exceeded the maximum number (1000) of line items allowed per invoice. | Verify the number of items in the transaction and the generated e-document The maximum number of items allowed per invoice is 1000. |
| 2174 | For inter state transaction, CGST and SGST Amounts are not applicable for item {0] 1 only lgst Amounts are Applicable | Verify the tax code and tax types in the transaction and the generated e-document |