How To Fix EJ000 - Function module can only process one IDoc

SAP Error Message - Details

• Message type: E = Error

• Message class: EJ - Formal error for ISU-IDocs

• Message number: 000

• Message text: Function module can only process one IDoc

What causes this issue?

Several IDocs were transferred to the current function module at the
same time for processing. However, multiple processing is not planned.

System Response

The system cannot process your request.

How to fix this error?

Call up the function module with one IDoc at a time.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message EJ000 - Function module can only process one IDoc ?

  The SAP error message EJ000 indicates that a function module is attempting to process more than one IDoc (Intermediate Document) at a time, but it is designed to handle only a single IDoc. This error typically arises in scenarios where IDocs are being processed in batch mode or when a function module is called in a loop that processes multiple IDocs simultaneously.
  Cause:
  
  Batch Processing: The function module is being called in a context where multiple IDocs are being passed to it, such as in a loop or batch processing scenario.
  Incorrect Function Module Usage: The function module being used is not designed to handle multiple IDocs, and the calling program is not respecting this limitation.
  Configuration Issues: There may be configuration settings in the IDoc processing that are not aligned with the expected input for the function module.
  
  Solution:
  
  Single IDoc Processing: Ensure that the function module is called with only one IDoc at a time. If you are processing multiple IDocs, you may need to loop through each IDoc and call the function module individually for each one.
  LOOP AT idoc_table INTO idoc.
      CALL FUNCTION 'YOUR_FUNCTION_MODULE'
          EXPORTING
              idoc_data = idoc.
  ENDLOOP.
  
  Check Function Module Documentation: Review the documentation for the function module to confirm its expected input and usage. Ensure that you are using it correctly.
  Error Handling: Implement error handling to catch this specific error and log it for further analysis. This can help in identifying the IDoc that caused the issue.
  Review IDoc Configuration: Check the configuration settings related to IDoc processing in your SAP system to ensure they are set up correctly.
  
  Related Information:
  
  IDoc Types: Understand the type of IDoc you are working with and its structure, as different IDoc types may have different processing requirements.
  Function Module: Identify the specific function module that is generating the error and review its parameters and expected input.
  SAP Notes: Search for relevant SAP Notes in the SAP Support Portal that may address this specific error or provide additional guidance.
  Debugging: If necessary, use the SAP debugger to step through the code and identify where the function module is being called with multiple IDocs.
  
  By following these steps, you should be able to resolve the EJ000 error and ensure that your IDoc processing is functioning as intended.