Maintenance work order integration fails when triggered by external MES system using REST API in multi-pod setup

ERP Oracle Fusion Cloud
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1

We’re experiencing integration failures when our external MES system attempts to create maintenance work orders in Oracle Fusion Cloud 22D. The REST API call consistently returns 400 Bad Request errors, blocking our entire work order synchronization process.

The payload structure appears correct based on documentation, but we’re operating in a multi-pod environment with three manufacturing organizations. The integration user has been granted the standard maintenance roles, but we’re unsure if organization-specific permissions are required.


POST /fscmRestApi/resources/11.13.18.05/maintenanceWorkOrders
Response: 400 Bad Request
{"error": "Invalid organization context"}

This is critical as our preventive maintenance schedule depends on this integration. Any guidance on REST API payload requirements and organization context setup would be greatly appreciated.

2

Thanks for the quick responses. I verified the integration user has MaintenanceWorkOrderManagementDuty role, but you’re right about data access - it was only assigned to two of the three orgs. I’ve requested access updates from our security team. Meanwhile, I’m reviewing our payload structure to ensure InventoryOrgId is included in the body rather than just headers.

3

One thing that’s often overlooked in multi-org MES integrations is the need for REST API scope configuration. Navigate to Setup and Maintenance > Manage Integration Service Catalog, and verify that your integration application has been granted scope to all relevant inventory organizations. Without proper scope definition, the API will reject requests even if the user has appropriate roles. Also check if your MES system is caching authentication tokens - stale tokens can cause intermittent organization context errors.

4

Looking at your error response, I suspect the issue is compounded by how you’re handling the organization context in batch scenarios. If your MES system is sending work orders for multiple organizations in the same session, you need to ensure each API call explicitly sets the organization context. The REST API doesn’t maintain org context across calls within a session like the UI does. Try adding a small delay between calls for different organizations or implement proper context switching in your integration logic.

5

Based on the complete thread, here’s the comprehensive solution addressing all three key areas:

REST API Payload Structure: Your payload must include these mandatory fields in the request body:


{
  "InventoryOrgId": 300000012345678,
  "AssetId": 300000087654321,
  "WorkOrderType": "PREVENTIVE",
  "Priority": 3,
  "ScheduledStartDate": "2025-03-25"
}

The InventoryOrgId in the body is critical - header-based org context is insufficient for maintenance APIs in 22D.

Organization Context in Multi-Pod: For each manufacturing organization:

  1. Verify integration user has MaintenanceWorkOrderManagementDuty role
  2. Confirm data security grants access to all target inventory organizations
  3. Navigate to Setup and Maintenance > Manage Integration Service Catalog
  4. Add your integration application and grant scope to all three inventory orgs
  5. Ensure your MES system doesn’t reuse organization context across API calls - each call should explicitly set the org

Integration User Permissions: The integration user requires:

  • Role: MaintenanceWorkOrderManagementDuty (for work order creation)
  • Role: AssetManagementViewer (for asset validation)
  • Data Security: Access to all three inventory organizations
  • API Scope: Granted in Integration Service Catalog for each org

Regarding your third organization issue with different work order type naming: This is indeed a validation problem. Each organization can have custom work order types defined in Manage Maintenance Lookups. Query the WorkOrderType lookup values for that specific organization using:


GET /fscmRestApi/resources/11.13.18.05/maintenanceLookups?q=LookupType='WORK_ORDER_TYPE';InventoryOrgId={orgId}

Map your MES work order types to the exact lookup codes defined in each Fusion organization. The API performs strict validation against organization-specific lookup values.

Implement error logging in your MES integration to capture the specific organization and work order type when failures occur - this will help identify org-specific configuration mismatches quickly.

Test your integration with a single work order per organization first, then scale to batch processing once all three orgs are validated.