How To Fix WN107 - Blocking Reason &1 does not exist

SAP Error Message - Details

• Message type: E = Error

• Message class: WN - Plant master data maintenance (integrated)

• Message number: 107

• Message text: Blocking Reason &1 does not exist

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

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Smart SAP Assistant

• What is the cause and solution for SAP error message WN107 - Blocking Reason &1 does not exist ?

  The SAP error message WN107, which states "Blocking Reason &1 does not exist," typically occurs in the context of warehouse management or inventory management processes. This error indicates that the system is trying to reference a blocking reason that has not been defined in the system.
  Cause:
  
  Missing Configuration: The blocking reason specified in the transaction or process does not exist in the system configuration. This could be due to a typo, or the blocking reason may not have been created in the system.
  Data Migration Issues: If data has been migrated from another system, some blocking reasons may not have been transferred correctly.
  Custom Development: If there are custom developments or enhancements in the system, they may be referencing a blocking reason that is not defined.
  
  Solution:
  
  
  Check Configuration:
  
  Go to the configuration settings in SAP and verify if the blocking reason exists. You can do this by navigating to the relevant configuration path in the SAP IMG (Implementation Guide).
  The path is usually: Logistics Execution > Warehouse Management > Define Blocking Reasons.
  If the blocking reason does not exist, you can create it by following the steps in the configuration.
  
  
  
  Correct the Input:
  
  If the blocking reason is being entered manually, ensure that it is spelled correctly and matches the existing entries in the system.
  
  
  
  Review Custom Code:
  
  If there are custom programs or enhancements, review the code to ensure that it is referencing valid blocking reasons.
  
  
  
  Data Migration Review:
  
  If this issue arose after a data migration, review the migration process to ensure that all necessary data, including blocking reasons, was migrated correctly.
  
  
  
  Consult Documentation:
  
  Check SAP documentation or notes related to the specific version of SAP you are using for any known issues or additional guidance.
  
  
  
  Related Information:
  
  Transaction Codes: You may need to use transaction codes like SPRO for configuration or SE11 to check the database table for blocking reasons.
  Tables: The relevant table for blocking reasons is usually TWM_BLOCK or similar, depending on your SAP version.
  SAP Notes: Check SAP Notes for any updates or patches that might address this issue.
  
  If the problem persists after following these steps, it may be beneficial to consult with your SAP support team or reach out to SAP support for further assistance.