# VF-1182

Source: https://xmlvalid.com/rules/VF-1182

> El valor del campo OperacionExenta es incorrecto (…).

- Level: error
- Rule sets: VERI*FACTU checks of the AEAT Validaciones 1.2.2 (8 April 2026)
- Context: `/*:RegFactuSistemaFacturacion/*:RegistroFactura/*:RegistroAlta/*:Desglose/*:DetalleDesglose`
- Test: `not($vat and $exempt != '') or $exempt = ('E1', 'E2', 'E3', 'E4', 'E5', 'E6')`

In English: For VAT, the exemption (OperacionExenta) must be E1 to E6; E7 and E8 exist for IGIC only.

Validate a document against these rules: https://xmlvalid.com/validate