How To Fix X4523 - An error occurred for suboperation &1 / &2 of a parallel sequence

SAP Error Message - Details

• Message type: E = Error

• Message class: X4 - APO Core Interface: Interfaces for Manufacturing Orders

• Message number: 523

• Message text: An error occurred for suboperation &1 / &2 of a parallel sequence

What causes this issue?

An error occurred during the processing of suboperation &V2& of
operation &V1& for a parallel sequence. The sequence concerned is
number &V3&. Note that no sequence numbers can be specified in this
message for any operations or parallel sequences that have been
inserted into the order by hand.

System Response

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

How to fix this error?

See the subsequent message in the application log to determine the
cause of the error.
Then, rectify the cause of the error.

Procedure for System Administrators

Information:
The operation concerned has the counter (APLZL) &V4&.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message X4523 - An error occurred for suboperation &1 / &2 of a parallel sequence ?

  The SAP error message X4523 indicates that there was an issue with a suboperation in a parallel sequence. This error typically arises in scenarios where multiple operations are being executed simultaneously, and one of those operations has failed or encountered an error.
  Cause:
  
  Suboperation Failure: One of the suboperations in the parallel sequence has failed due to various reasons such as data inconsistencies, missing data, or incorrect configurations.
  Resource Conflicts: There may be conflicts in resource allocation, such as locks on database entries or insufficient system resources.
  Configuration Issues: Incorrect settings in the parallel processing configuration can lead to errors.
  Timeouts: If a suboperation takes too long to execute, it may time out and cause the entire sequence to fail.
  Dependency Issues: If one suboperation depends on the successful completion of another, and that operation fails, it can lead to this error.
  
  Solution:
  
  Check Logs: Review the application logs and system logs to identify the specific suboperation that failed and the reason for its failure.
  Analyze Dependencies: Ensure that all dependencies between suboperations are correctly defined and that any required data is available.
  Resource Availability: Check for any resource conflicts or locks that may be preventing the suboperation from executing successfully.
  Configuration Review: Verify the configuration settings for parallel processing to ensure they are set up correctly.
  Retry Mechanism: Implement a retry mechanism for the failed suboperation if applicable, especially if the failure was due to a transient issue.
  Error Handling: Enhance error handling in the parallel processing logic to manage failures more gracefully and provide more informative error messages.
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message. SAP frequently updates its knowledge base with solutions for common errors.
  Documentation: Review the SAP documentation related to parallel processing and error handling to understand best practices and configurations.
  Community Forums: Engage with SAP community forums or support channels to see if other users have encountered similar issues and how they resolved them.
  
  If the issue persists after following these steps, it may be necessary to involve SAP support for further investigation and assistance.