403 (Forbidden) REC_FORBIDDEN on A039 endpoint INT

We are in the process of preparing to migrate from A020 to A039 Upload file to document store.

Our INT calls to A039 are currently rejected with HTTP 403:

{
“resourceType”: “OperationOutcome”,
“issue”: [{
“severity”: “error”,
“code”: “forbidden”,
“diagnostics”: “The ASID (REDACTED) does not have the interaction (urn:nhs:names:services:ers:CREATE_BINARY_R4_V001) required to call this endpoint.”,
“details”: { “coding”: [{ “code”: “REC_FORBIDDEN” }] }
}]
}

Request details:

Do we need the permission added for this endpoint on INT?

@gareth.perkins Will assist over email - closing this one.