TAX PAYER ID VALIDATION FOR GRUBO BIMBO TUNISIA IMPLEMENTATION

As part of the Grupo Bimbo Tunisia implementation in Oracle Fusion Cloud, we need the Taxpayer ID field to validate entries against the official structure of the Tunisian Matricule Fiscal.

The Tax ID has a fixed structure of 13 characters in this pattern (example: 1131543 N A M 000):

7 digits – identifier
1 letter – control letter
1 letter – VAT code (must be A, B, P, N, or D)
1 letter – taxpayer category (must be M, P, C, or E)
3 digits – establishment code (000 = head office)

This validation is required because the VAT code and category segments drive tax determination and statutory reporting; an invalid Tax ID would cause incorrect VAT treatment and non-compliant fiscal reports.