How To Fix MW476 - Parallel processing not possible for generaton of &1 if OTB activated

SAP Error Message - Details

• Message type: E = Error

• Message class: MW - Messages IS-R / Allocation Tables

• Message number: 476

• Message text: Parallel processing not possible for generaton of &1 if OTB activated

What causes this issue?

When OTB is activated, parallel processing is not possible for the
generation of &V1&.

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?

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message MW476 - Parallel processing not possible for generaton of &1 if OTB activated ?

  The SAP error message MW476, which states "Parallel processing not possible for generation of &1 if OTB activated," typically occurs in the context of inventory management and order processing when the system is trying to perform operations that involve the Open-to-Buy (OTB) functionality.
  Cause:
  The error arises when the system attempts to execute parallel processing for a task that is not compatible with the OTB functionality. OTB is used to manage inventory levels and purchasing decisions based on sales forecasts and other factors. When OTB is activated, certain processes must be executed sequentially to ensure data integrity and consistency, which prevents parallel processing.
  Solution:
  To resolve this error, you can consider the following approaches:
  
  
  Disable OTB Temporarily: If possible, you can disable the OTB functionality temporarily to allow the parallel processing to occur. However, this may not be advisable if OTB is critical for your business processes.
  
  
  Sequential Processing: Ensure that the processes that are causing the error are executed sequentially rather than in parallel. This may involve adjusting the configuration or the way the processes are triggered.
  
  
  Check Configuration: Review the configuration settings related to OTB and parallel processing in your SAP system. Ensure that they are set up correctly and that there are no conflicting settings.
  
  
  Batch Job Management: If the error occurs during batch job processing, consider reviewing the job scheduling and execution settings. You may need to adjust the job to run in a non-parallel mode.
  
  
  Consult Documentation: Refer to SAP documentation or notes related to OTB and parallel processing for any specific guidelines or recommendations.
  
  
  Contact SAP Support: If the issue persists and you cannot find a resolution, consider reaching out to SAP support for assistance. They may provide insights specific to your system configuration and version.
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional context.
  Transaction Codes: Familiarize yourself with transaction codes related to OTB and inventory management, such as MM03 (Display Material), ME21N (Create Purchase Order), and others that may be relevant to your processes.
  System Logs: Review system logs for additional error messages or warnings that may provide more context about the issue.
  
  By following these steps, you should be able to address the MW476 error and ensure that your processes run smoothly.