How To Fix MC478 - & & & for background conversion already entered

SAP Error Message - Details

• Message type: E = Error

• Message class: MC - Aggregate: views, matchcodes, lock objects

• Message number: 478

• Message text: & & & for background conversion already entered

What causes this issue?

A database operation is to be marked for execution in the background.
However, this operation is already entered in the table which collects
these database operations until they can be executed in the background.

System Response

The system continues.

How to fix this error?

No action necessary. This message is only for information. You might
possibly want to find out why this request was marked repeatedly.
Perhaps the program (conversion program) which executes the database
operations has not been executing for awhile.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message MC478 - & & & for background conversion already entered ?

  The SAP error message MC478 typically indicates an issue related to background processing in the context of data conversion or data transfer, particularly in the area of Material Management (MM) or Inventory Management (IM). The error message usually states something along the lines of "Background conversion already entered," which suggests that a background job for a specific process has already been scheduled or is currently running.
  Cause:
  
  Duplicate Job Submission: The error often occurs when a user attempts to submit a background job that has already been submitted or is currently in progress.
  Job Overlap: If a job is still running and another attempt is made to start the same job, this error will be triggered.
  System Lock: There may be a lock on the data or process that prevents the job from being executed again until the first job completes.
  
  Solution:
  
  Check Job Status: Use transaction code SM37 to check the status of background jobs. Look for jobs related to the process you are trying to execute. If a job is still running, you may need to wait for it to complete.
  Cancel or Delete Job: If the job is stuck or you need to rerun it, you can cancel or delete the existing job from the SM37 transaction.
  Review Job Parameters: Ensure that the parameters for the job are correct and that you are not inadvertently trying to submit the same job multiple times.
  Consult Logs: Check the job logs for any additional error messages or warnings that might provide more context on why the job is not completing successfully.
  System Administrator: If you are unable to resolve the issue, consult with your SAP Basis or system administrator for further assistance. They may have additional tools or insights into the job processing.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as SM37 (Job Monitoring), SM21 (System Log), and ST22 (Dump Analysis) 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 SAP documentation related to background processing and job scheduling for best practices and guidelines.
  
  By following these steps, you should be able to identify the cause of the MC478 error and take appropriate action to resolve it.