DGII 91 — ITBIS rate not allowed (use 0%, 16% or 18%)

Tasa de ITBIS no permitida (use 0%, 16% ó 18%)

Field	Value
DGII code	91
Category	Validation
HTTP status	422
Retryable	No
Tenant fixable	Yes
Problem.type	https://errors.api.erply.pro/dgii-91-tasa-itbis-no-permitida

Pending details

This entry is partially documented. Please contact us via /docs/support if you encounter this code in production so we can prioritise it.

Probable cause

DGII rejected the e-CF with code 91 in the Validation category.

How to fix

1. Review the detail field of the received Problem for more context.
2. Verify the payload against the published OpenAPI schema.
3. If the error persists, open a ticket at /docs/support including the correlationId and dgii.trackId.

Example application/problem+json response

{
  "type": "https://errors.api.erply.pro/dgii-91-tasa-itbis-no-permitida",
  "title": "ITBIS rate not allowed (use 0%, 16% or 18%)",
  "status": 422,
  "detail": "DGII code 91: ITBIS rate not allowed (use 0%, 16% or 18%)",
  "instance": "/v1/invoices",
  "correlationId": "1-65fa7c3a-6f9c2d8e0a1b2c3d4e5f6789",
  "dgii": {
    "code": "91",
    "trackId": "20260501-DGII-9988"
  }
}

Source

DGII PSFE Technical Spec + Norma 06-04. Exact citation pending review by the compliance specialist.