How To Fix IU802 - >>> Data transfer alredy started?

SAP Error Message - Details

• Message type: E = Error

• Message class: IU - Incremental Conversion (ICNV)

• Message number: 802

• Message text: >>> Data transfer alredy started?

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message IU802 - >>> Data transfer alredy started? ?

  The SAP error message IU802, which states "Data transfer already started," typically occurs in the context of data transfer processes, such as during the execution of a data transfer program or when using the SAP Data Transfer Workbench. This error indicates that a data transfer process is already in progress, and the system does not allow a new transfer to start until the current one is completed.
  Causes:
  
  Concurrent Data Transfer: Another instance of the data transfer program is already running, which prevents a new instance from starting.
  Session Lock: The system may have a session lock that is preventing the initiation of a new data transfer.
  Incomplete Previous Transfer: A previous data transfer may not have completed successfully, leaving the system in a state where it thinks a transfer is still ongoing.
  
  Solutions:
  
  
  Check Running Processes: 
  
  Use transaction codes like SM37 (Job Monitoring) to check if there are any active jobs related to the data transfer. If you find an active job, you may need to wait for it to complete or terminate it if it is stuck.
  
  
  
  Review Logs: 
  
  Check the logs for the data transfer process to identify any issues that may have caused the previous transfer to hang or not complete properly.
  
  
  
  Session Management: 
  
  If you suspect a session lock, you can use transaction SM12 to check for any locks held by users. If you find locks that are no longer needed, you can delete them (ensure you have the necessary authorizations).
  
  
  
  Restart the Process: 
  
  If the previous transfer has failed or is no longer needed, you may need to restart the data transfer process after ensuring that no other instances are running.
  
  
  
  System Restart: 
  
  In some cases, a system restart may be necessary to clear any lingering processes or locks that are causing the issue.
  
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as SM37 (Job Monitoring), SM12 (Lock Entries), and SLG1 (Application Log) for troubleshooting.
  SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  Documentation: Review the documentation for the specific data transfer program you are using, as it may have specific requirements or limitations regarding concurrent executions.
  
  If the issue persists after trying the above solutions, it may be beneficial to consult with your SAP Basis team or SAP support for further assistance.