How To Fix SADL_GW027 - Sticky session request error: Multiple call of Discard in one batch

SAP Error Message - Details

• Message type: E = Error

• Message class: SADL_GW -

• Message number: 027

• Message text: Sticky session request error: Multiple call of Discard in one batch

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message SADL_GW027 - Sticky session request error: Multiple call of Discard in one batch ?

  The SAP error message SADL_GW027 indicates a "Sticky session request error: Multiple call of Discard in one batch." This error typically occurs in the context of SAP Gateway and the SAP Application Development Framework (SADL) when there are issues with handling requests in a batch processing scenario.
  Cause:
  The error is generally caused by the following factors:
  
  
  Multiple Discard Calls: The error suggests that there are multiple calls to the Discard method within a single batch request. This can happen if the application logic inadvertently tries to discard multiple entities or requests that are not meant to be discarded together.
  
  
  Session Management Issues: If the session management is not handled properly, it can lead to inconsistencies in how requests are processed, resulting in this error.
  
  
  Concurrency Issues: If multiple requests are being processed simultaneously and they interfere with each other, it can lead to this error.
  
  
  Incorrect Batch Processing Logic: If the logic for handling batch requests is not implemented correctly, it can lead to multiple discard calls being made.
  
  
  Solution:
  To resolve the SADL_GW027 error, consider the following steps:
  
  
  Review Batch Processing Logic: Check the implementation of your batch processing logic to ensure that the Discard method is called appropriately. Ensure that it is not being called multiple times for the same entity or request.
  
  
  Debugging: Use debugging tools to trace the execution flow of your application. Look for instances where the Discard method is invoked and ensure that it is only called when necessary.
  
  
  Session Management: Ensure that session management is correctly implemented. Make sure that the session is properly maintained and that requests are not conflicting with each other.
  
  
  Error Handling: Implement proper error handling to catch and manage exceptions that may arise during batch processing. This can help prevent multiple discard calls from being executed.
  
  
  SAP Notes and Documentation: Check for any relevant SAP Notes or documentation that may provide additional insights or patches related to this error. SAP frequently updates its systems, and there may be known issues or fixes available.
  
  
  Testing: After making changes, thoroughly test the batch processing functionality to ensure that the error does not occur again.
  
  
  Related Information:
  
  SAP Gateway: Understanding how SAP Gateway handles requests and sessions can provide insights into managing batch requests effectively.
  SADL Documentation: Review the SAP Application Development Framework (SADL) documentation for best practices on handling batch requests and session management.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they have found.
  
  By following these steps, you should be able to identify the root cause of the SADL_GW027 error and implement a solution to prevent it from occurring in the future.