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Cannot Load Task List Component - openapi3.json 404 Error and Missing Backend for Process Automation

MiguelMmmJul 15 2025

Hi Oracle Community,

I’m trying to use the <oj-opac-task-list> component in Oracle Visual Builder to display tasks from Oracle Process Automation (OPA), but I keep encountering the following error:

Service load error:
https://<my-vbcs-instance>/.../services/OpaServiceConnections/openapi3.json
HTTP status: 404

Here's what I’ve done so far:

  1. Created a new Visual Builder Web App and added the <oj-opac-task-list> component inside a page.

  2. Attempted to configure a Service Connection based on OpaServiceConnections, but received the 404 error shown above.

  3. Tried to create a new Backend (Process Automation type), but the system shows:

    “There are no Oracle Cloud Applications backends available”

  4. I also verified that no backends are visible in the Service Catalog when attempting to add a Service Connection from Catalog.

  5. I suspect this may be related to missing configuration in IDCS. However, I’m unsure whether I need to:

  • Assign roles like ProcessAutomationUser to a Client App in IDCS
  • Register a Client App manually
  • Enable any specific settings in Oracle Integration (OIC)

My Environment:

  • Visual Builder (VB Studio hosted)
  • Oracle Integration Cloud with Process Automation
  • No visible backends in Service Catalog
  • Task List component fails to load service schema

My Questions:

  1. What are the exact steps to make the OpaServiceConnections/openapi3.json endpoint available?
  2. Do I need to manually configure or expose the Process Automation services in OIC or VB Studio?
  3. Are there specific roles or client app settings required in IDCS to enable this connection?

Any guidance, documentation, or examples would be highly appreciated. I believe I’m missing a critical configuration step to allow VB to discover the Process Automation services properly.

Thanks in advance,

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Added on Jul 15 2025
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