How To Fix QM_API_ODATA_MSG112 - Update of the read-only property &1 not possible.

SAP Error Message - Details

• Message type: E = Error

• Message class: QM_API_ODATA_MSG - QM API OData Messages

• Message number: 112

• Message text: Update of the read-only property &1 not possible.

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message QM_API_ODATA_MSG112 - Update of the read-only property &1 not possible. ?

  The SAP error message QM_API_ODATA_MSG112, which states "Update of the read-only property &1 not possible," typically occurs in the context of OData services when there is an attempt to modify a property that is defined as read-only in the underlying data model. This can happen in various scenarios, particularly when working with Quality Management (QM) data in SAP.
  Cause:
  
  Read-Only Property: The property you are trying to update is defined as read-only in the OData service. This means that the property cannot be modified through the OData API.
  Incorrect Mapping: There may be a mismatch between the data model and the OData service definition, leading to attempts to update properties that should not be updated.
  Business Logic: Certain properties may be controlled by business logic that prevents them from being updated after a certain point in the process.
  
  Solution:
  
  Check Property Definition: Review the OData service metadata to confirm which properties are read-only. You can do this by accessing the service's metadata URL (usually something like /sap/opu/odata/sap/<service_name>/$metadata).
  Modify Request: Ensure that your request does not include the read-only property in the payload. Only include properties that are allowed to be updated.
  Review Business Processes: If the property is read-only due to business rules, consider whether your process needs to be adjusted to comply with these rules.
  Consult Documentation: Refer to the SAP documentation for the specific OData service you are using to understand the properties and their allowed operations.
  Error Handling: Implement error handling in your application to gracefully manage situations where updates to read-only properties are attempted.
  
  Related Information:
  
  OData Services: Understanding how OData services work in SAP is crucial. Familiarize yourself with the concepts of entity sets, properties, and their accessibility (read-only vs. updatable).
  SAP Notes: Check for any relevant SAP Notes that might address known issues or provide guidance on the specific OData service you are using.
  Debugging: If you have access to the backend, consider debugging the OData service to trace the request and see how the properties are being handled.
  
  By following these steps, you should be able to resolve the error and ensure that your OData requests are correctly formed.