Cause
The object does not exist in the namespace of the integration and environment, belongs to another integration or company, or its channel, version or modality is no longer in the grant. All cases respond the same way.
What to do
Check the external_id, the environment of the credential and the current grant.
application/problem+json
{
"type": "https://masnet.com/developers/errors/unavailable",
"title": "Resource unavailable",
"status": 404,
"detail": "...",
"code": "unavailable",
"correlation_id": "..."
}