PROFORMA_NOT_ISSUABLE

When it happens

The document is a proforma. Proformas are not issued: they are created ACTIVE and become an invoice when converted.

How to fix it

Convert the proforma when the customer accepts it; conversion creates the fiscal invoice.

Retry

Do not retry. The outcome is final: sending the same request again gets the same answer.

Returned by

The operations where this code is most likely. The list is not exhaustive.

• POST /v1/companies/{company_id}/invoices/{invoice_id}/issue

Example response

When this error occurs, the API answers 422 Unprocessable Content with a JSON body of this shape:

{
  "type": "https://docs.beel.es/errors/PROFORMA_NOT_ISSUABLE",
  "title": "PROFORMA_NOT_ISSUABLE",
  "detail": "A proforma invoice is not issued: it is born active and becomes an invoice when the customer accepts it",
  "instance": "/v1/<resource>",
  "errors": [],
  "success": false,
  "error": {
    "code": "PROFORMA_NOT_ISSUABLE",
    "message": "A proforma invoice is not issued: it is born active and becomes an invoice when the customer accepts it",
    "details": {}
  },
  "meta": {
    "timestamp": "2026-05-21T10:00:00Z",
    "request_id": "4bf92f3577b34da6a3ce929d0e0e4736"
  }
}

The type URI is stable and always resolves to this page.

Message

Send the request with Accept-Language: <es|en|ca> to receive the message in your preferred language.

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