Inaccurate API documentation

[ubiuser]

Bug report

• [X] Documentation

Describe the bug The generated documentation does not match the actual returned 403 error for the 'Submit VAT return for period' endpoint. The example in the docs https://developer.service.hmrc.gov.uk/api-documentation/docs/api/service/vat-api/1.0/oas/page#tag/organisations/operation/SubmitVATreturnforperiod is:

{
"code": "NOT_FINALISED",
"message": "User has not declared VAT return as final"
}

Actual response is:

{
    "code": "BUSINESS_ERROR",
    "message": "Business validation error",
    "errors": [
        {
            "code": "NOT_FINALISED",
            "message": "The return cannot be accepted without a declaration it is finalised.",
            "path": "/finalised"
        }
    ]
}

To Reproduce Make a request to 'Submit VAT return for period' endpoint with finalised=false and compare the returned error to the documentation.

Expected behavior Documentation matches implementation.

Additional context Relevant code blocks:

• https://github.com/hmrc/vat-api/blob/main/app/v1/models/errors/submitReturnErrors.scala#L131C1-L131C1
• https://github.com/hmrc/vat-api/blob/main/resources/public/api/conf/1.0/application.yaml#L524