How To Fix WL779 - Container changed

SAP Error Message - Details

• Message type: E = Error

• Message class: WL - Workflow: run-time messages

• Message number: 779

• Message text: Container changed

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

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Smart SAP Assistant

• What is the cause and solution for SAP error message WL779 - Container changed ?

  The SAP error message WL779, which states "Container changed," typically occurs in the context of SAP's workflow management. This error indicates that there has been a change in the data container that the workflow is using, which can disrupt the workflow's execution.
  Cause:
  
  Data Modification: The most common cause of this error is that the data in the workflow container has been modified after the workflow has started. This can happen if another process or user changes the data that the workflow relies on.
  Concurrency Issues: If multiple workflows or processes are trying to access and modify the same data simultaneously, it can lead to inconsistencies and trigger this error.
  Incorrect Workflow Configuration: Sometimes, the workflow might not be configured correctly, leading to unexpected changes in the container.
  
  Solution:
  
  Check Data Consistency: Ensure that the data being used in the workflow is consistent and has not been modified by other processes. You may need to implement locking mechanisms to prevent concurrent modifications.
  Review Workflow Logic: Examine the workflow logic to ensure that it is correctly handling data changes. This may involve adding checks or conditions to manage data integrity.
  Error Handling: Implement error handling in the workflow to manage situations where the container changes unexpectedly. This could involve retrying the workflow or notifying users of the issue.
  Debugging: Use transaction codes like SWI1 (Work Item Selection) or SWI2_FREQ (Work Item Selection - Frequency) to analyze the workflow instances and identify where the error is occurring.
  Consult Documentation: Review SAP documentation or notes related to the specific version of SAP you are using, as there may be known issues or patches available.
  
  Related Information:
  
  Workflow Container: The workflow container is a data structure that holds the data relevant to the workflow instance. It can include variables, parameters, and other data elements that the workflow uses.
  SAP Notes: Check SAP Notes for any updates or patches related to this error. SAP frequently releases notes that address specific issues or provide guidance on best practices.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered the same issue and what solutions they have found effective.
  
  If the problem persists after trying the above solutions, it may be beneficial to consult with your SAP support team or a technical consultant who specializes in SAP workflows.