How To Fix JIT00546 - IDoc foreground processing: JIT call already exists

SAP Error Message - Details

• Message type: E = Error

• Message class: JIT00 - JIT: Messages for JIT Process

• Message number: 546

• Message text: IDoc foreground processing: JIT call already exists

What causes this issue?

You are currently processing an IDoc in the foreground. A sequenced JIT
call already exists for the external JIT call number in question.

System Response

The values in the IDoc are accepted anyway.

How to fix this error?

You can display the existing sequenced JIT call in a separate session
(transaction JIT3).

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message JIT00546 - IDoc foreground processing: JIT call already exists ?

  The SAP error message JIT00546, which states "IDoc foreground processing: JIT call already exists," typically occurs in the context of IDoc processing when there is an attempt to initiate a new JIT (Just-In-Time) call while another JIT call is already in progress. This can happen in scenarios where multiple IDocs are being processed simultaneously, or if there is a delay in the completion of a previous JIT call.
  Cause:
  
  Concurrent Processing: The error often arises when multiple IDocs are being processed at the same time, and the system is trying to initiate a new JIT call before the previous one has completed.
  System Configuration: There may be configuration settings that limit the number of concurrent JIT calls or IDoc processing.
  Long Processing Times: If the processing of the first JIT call takes longer than expected, it can lead to this error when a second call is attempted.
  Locking Issues: There may be database locks or other resource contention issues that prevent the first JIT call from completing.
  
  Solution:
  
  Check for Active JIT Calls: Before initiating a new JIT call, ensure that there are no active JIT calls in progress. You can check the status of IDoc processing in transaction WE02 or WE05.
  Increase Processing Capacity: If concurrent processing is required, consider adjusting the system configuration to allow for more concurrent JIT calls, if feasible.
  Optimize Processing Time: Review the processing logic for the IDocs to identify any bottlenecks or inefficiencies that could be causing delays.
  Error Handling: Implement error handling in your IDoc processing logic to gracefully manage situations where a JIT call cannot be initiated due to an existing call.
  Monitor System Performance: Use transaction ST22 (dump analysis) and SM21 (system log) to monitor for any performance issues or errors that may be affecting IDoc processing.
  
  Related Information:
  
  IDoc Processing: Understand the IDoc processing flow and how JIT calls are initiated and managed within SAP.
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional guidance on IDoc processing and JIT calls.
  Transaction Codes: Familiarize yourself with transaction codes like WE02, WE05, and SM37 (for job monitoring) to help diagnose and troubleshoot IDoc processing issues.
  
  If the problem persists after trying the above solutions, it may be beneficial to consult with your SAP Basis or technical team for further investigation and support.