Fusion REST API attachment FileContents endpoint returns 404 from Oracle Workflow AI Agent

I’m facing an issue calling an Oracle Fusion REST API attachment download endpoint from an Oracle Workflow / AI Agent HTTP action.

The same endpoint works correctly from Bruno/Postman, but returns 404 Not Found when invoked from the Workflow/Agent.

Endpoint details

• Method: GET
• Header:

{  "Accept": "application/octet-stream"}

• Resource path used in the agent:

/fscmRestApi/resources/11.13.18.05/invoices/310030/child/attachments/<ATTACHMENT_ID>/enclosure/FileContents

Agent input

{  "operation_type": "GET",  "headers": {    "Accept": "application/octet-stream"  },  "resource_path": "/fscmRestApi/resources/11.13.18.05/invoices/310030/child/attachments/<ATTACHMENT_ID>/enclosure/FileContents",  "query_dict": {}}

Agent output

{  "response": "",  "responseStatus": 404}

• Latency: ~0.19 seconds (fails immediately)

Observations

• The same URL works from Postman/Bruno using the same user/authentication.