Cause
The operation includes fields that the catalog does not allow writing through the API. The response includes denied_fields.
What to do
Remove the listed fields.
application/problem+json
{
"type": "https://masnet.com/developers/errors/field_not_writable",
"title": "Fields not writable",
"status": 422,
"detail": "...",
"code": "field_not_writable",
"correlation_id": "..."
}