How To Fix WL890 - Work queue: Key of work queue line occurs twice

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 890

• Message text: Work queue: Key of work queue line occurs twice

What causes this issue?

The specified line could not be included in the work queue since it
already exists.

System Response

The action was terminated. The work queue was not changed.

How to fix this error?

Check the line of the work queue.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message WL890 - Work queue: Key of work queue line occurs twice ?

  The SAP error message WL890, which states "Work queue: Key of work queue line occurs twice," typically indicates that there is a duplicate entry in a work queue. This can happen in various scenarios, such as when processing work items or managing workflows in SAP.
  Cause:
  
  Duplicate Entries: The most common cause of this error is that the same work item or task has been added to the work queue more than once, leading to a conflict.
  Data Integrity Issues: There may be issues with data integrity in the database, where the same key is being referenced multiple times due to incorrect data handling or processing.
  Configuration Errors: Misconfigurations in the workflow or work queue settings can also lead to this error.
  
  Solution:
  
  Identify Duplicates: Check the work queue for duplicate entries. You can do this by querying the relevant tables or using transaction codes like SWI1 (Work Item Selection) to view the work items.
  Remove Duplicates: Once identified, you can remove the duplicate entries manually or through a batch process, depending on the volume of duplicates.
  Check Workflow Configuration: Review the workflow configuration to ensure that it is set up correctly and that there are no processes that could lead to duplicate entries.
  Database Consistency Check: Run consistency checks on the database to ensure that there are no underlying issues causing the duplicates.
  Consult SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that may address this specific error or provide patches or updates that could resolve the issue.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with transaction codes like SWI1 (Work Item Selection) and SWI2_FREQ (Work Item Selection with Frequency) to monitor and manage work items.
  SAP Support: If the issue persists, consider reaching out to SAP Support for assistance, especially if it is affecting critical business processes.
  Documentation: Review SAP documentation related to work queues and workflows for best practices and troubleshooting steps.
  
  By following these steps, you should be able to resolve the WL890 error and prevent it from occurring in the future.