How To Fix WU120 - Blocking reason missing for block date

SAP Error Message - Details

• Message type: E = Error

• Message class: WU - Promotion management messages

• Message number: 120

• Message text: Blocking reason missing for block date

What causes this issue?

A blocking date was entered without entering a reason for blocking at
the same time. For clarification purposes you should also always
enter the reason for blocking.

How to fix this error?

Enter the reason for blocking or delete the blocking date.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message WU120 - Blocking reason missing for block date ?

  The SAP error message WU120, which states "Blocking reason missing for block date," typically occurs in the context of the SAP system when there is an attempt to block a work center or a production resource without specifying a valid blocking reason. This can happen in various modules, including Production Planning (PP) or Plant Maintenance (PM).
  Cause:
  
  Missing Blocking Reason: The primary cause of this error is that the system requires a blocking reason to be specified when blocking a work center or resource, and this information is either missing or not properly configured.
  Configuration Issues: The blocking reasons may not be defined in the system, or the relevant configuration settings may not be correctly set up.
  User Input Error: The user may have neglected to enter a blocking reason when attempting to perform the blocking action.
  
  Solution:
  
  
  Check Blocking Reasons: 
  
  Navigate to the configuration settings for blocking reasons in the SAP system. This can typically be found in the customizing settings under the relevant module (e.g., Production Planning).
  Ensure that valid blocking reasons are defined and active.
  
  
  
  Enter Blocking Reason: 
  
  When attempting to block a work center or resource, ensure that you are entering a valid blocking reason in the appropriate field.
  
  
  
  Review User Authorizations: 
  
  Ensure that the user has the necessary authorizations to perform the blocking action and to access the blocking reason configuration.
  
  
  
  Consult Documentation: 
  
  Refer to SAP documentation or help files for specific instructions on how to configure and use blocking reasons in your version of SAP.
  
  
  
  Contact SAP Support: 
  
  If the issue persists after checking the above points, consider reaching out to SAP support for further assistance, as there may be specific patches or updates required for your system.
  
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes that may be used to manage work centers and blocking reasons, such as CR01 (Create Work Center) or CR02 (Change Work Center).
  SAP Notes: Check for any SAP Notes related to this error message, as they may provide additional insights or solutions.
  User Forums: Engage with SAP community forums or user groups where similar issues may have been discussed, and solutions shared.
  
  By following these steps, you should be able to resolve the WU120 error and successfully block the necessary work centers or resources in your SAP system.