How To Fix JIT00520 - There are several calls for external call number &3

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 520

• Message text: There are several calls for external call number &3

What causes this issue?

The system found more than one sequenced JIT call with production
number&V3& (customer &V1&, customer plant &V2&). On the next screen,
you can select one of these JIT calls by choosing <LS>Propose JIT
call</> and thus have the system propose the item data of the JIT call
in question. Please note the repeat order indicator.

System Response

The repeat order indicator is set automatically upon receipt of the
sequenced JIT call.

How to fix this error?

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message JIT00520 - There are several calls for external call number &3 ?

  The SAP error message JIT00520 indicates that there are multiple calls for an external call number, which typically occurs in the context of Just-In-Time (JIT) delivery processes. This error can arise when the system detects that there are several requests or calls for the same external call number, which can lead to confusion or conflicts in processing.
  Cause:
  
  Duplicate Calls: The most common cause is that the same external call number has been processed multiple times, leading to a conflict.
  Configuration Issues: There may be issues with the configuration of the JIT process or the way external calls are set up in the system.
  Data Integrity Issues: There could be inconsistencies in the data related to the external call numbers, such as incorrect entries or missing information.
  System Bugs: Occasionally, this error can be caused by bugs in the SAP system or specific transactions.
  
  Solution:
  
  Check for Duplicates: Review the external call numbers in the system to identify any duplicates. Ensure that each call number is unique and corresponds to a single request.
  Review Configuration: Check the configuration settings for JIT processes in your SAP system. Ensure that they are set up correctly and that there are no conflicting settings.
  Data Validation: Validate the data associated with the external call numbers. Ensure that all necessary information is complete and accurate.
  Transaction Logs: Review transaction logs to identify the source of the duplicate calls. This can help in understanding why multiple calls are being generated.
  Consult Documentation: Refer to SAP documentation or notes related to JIT processes and error JIT00520 for any specific guidance or patches that may be available.
  Contact SAP Support: If the issue persists and cannot be resolved through the above steps, consider reaching out to SAP support for further assistance.
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  JIT Process Documentation: Familiarize yourself with the JIT process documentation in SAP to understand how external calls are managed and what best practices should be followed.
  User Forums: Engage with SAP user forums or communities where similar issues may have been discussed, and solutions shared by other users.
  
  By following these steps, you should be able to diagnose and resolve the JIT00520 error in your SAP system.