Improvement: POST /v1/organisation/accounts error response

[emiliosa]

Message response from POST /v1/organisation/accounts endpoint is not accurate enough when dealing with errors.

Request:

curl --location --request POST 'http://0.0.0.0:8081/v1/organisation/accounts'
--header 'Accept: application/json; charset=utf-8' \
--header 'Content-Type: application/json' \
--data-raw '{
  "data": {
    "id": "5cfa2634-b595-4123-a5c5-d2e2bd1257a5",
    "organisation_id": "bb2c9922-114c-42e0-acbd-04214b552ffe",
    "type": "account",
    "attributes": {
    	"base_currency": "GBP",
    	"name": [
    		"Emiliano"
    	],
        "bank_id": "TEST",
        "bank_id_code": "TEST",
        "bic": "NWBKGB",
        "account_classification": "Personal"
    }
  }
}'

Response:

{
    "error_message": "validation failure list:\nvalidation failure list:\ntype in body should be one of [accounts]"
}

Response proposal:

{
    "code": 400,
    "message": "validation failure list:\nvalidation failure list:\nvalidation failure list:\nbic in body should match '^([A-Z]{6}[A-Z0-9]{2}|[A-Z]{6}[A-Z0-9]{5})$'\ncountry in body is required\ntype in body should be one of [accounts]",
    "errors": [
        {
            "validation_failure": {
                "type": "type in body should be one of [accounts]",
                "bic": "bic in body should match '^([A-Z]{6}[A-Z0-9]{2}|[A-Z]{6}[A-Z0-9]{5})$'",
                "country": "country in body is required"
            }
        }
    ]
}