How To Fix /IWBEP/CM_CP144 - Reading data in changeset not allowed

SAP Error Message - Details

• Message type: E = Error

• Message class: /IWBEP/CM_CP -

• Message number: 144

• Message text: Reading data in changeset not allowed

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /IWBEP/CM_CP144 - Reading data in changeset not allowed ?

  The SAP error message /IWBEP/CM_CP144 Reading data in changeset not allowed typically occurs in the context of OData services when there is an attempt to read data while a changeset is being processed. A changeset is a group of operations that are executed together, and during this time, reading data is not permitted to maintain data integrity.
  Cause:
  
  Changeset Context: The error arises when a read operation is attempted while a changeset is active. In OData, changesets are used to bundle multiple create, update, or delete operations into a single transaction.
  Incorrect Service Implementation: The OData service may not be correctly implemented to handle changesets, leading to attempts to read data when it is not allowed.
  Concurrency Issues: There may be concurrency issues where multiple operations are trying to access the same data simultaneously.
  
  Solution:
  
  Avoid Read Operations During Changeset: Ensure that your application logic does not attempt to read data while a changeset is being processed. You should separate read and write operations.
  Check Service Implementation: Review the implementation of your OData service to ensure that it correctly handles changesets and does not allow read operations during their execution.
  Use Transaction Management: If you need to perform both read and write operations, consider using transaction management to ensure that reads are performed outside of the changeset context.
  Error Handling: Implement proper error handling in your application to catch this error and respond appropriately, such as retrying the operation after the changeset has been processed.
  
  Related Information:
  
  OData Protocol: Familiarize yourself with the OData protocol and how it handles changesets. Understanding the lifecycle of requests can help in designing your application to avoid such errors.
  SAP Notes: Check SAP Notes and documentation for any updates or patches related to this error message. There may be specific fixes or recommendations provided by SAP.
  Debugging: If you have access to the backend, consider debugging the OData service to trace the execution flow and identify where the read operation is being triggered during a changeset.
  
  By following these guidelines, you should be able to resolve the error and ensure that your OData service operates smoothly without encountering this issue.