How To Fix WU151 - Module & already exists - please choose another module no.

SAP Error Message - Details

• Message type: E = Error

• Message class: WU - Promotion management messages

• Message number: 151

• Message text: Module & already exists - please choose another module no.

What causes this issue?

The module number you assigned already exists in the system. As a
module number must be unique not just within the promotion but for all
promotions, you are advised to add a promotion-specific number to the
module number as a prefix or a suffix.

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?

Enter a different module number.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message WU151 - Module & already exists - please choose another module no. ?

  The SAP error message WU151 indicates that you are trying to create or modify a module (such as a training module in SAP Learning Solution) that already exists in the system. This error typically occurs when there is an attempt to create a new module with a module number that is already assigned to another module.
  Cause:
  
  Duplicate Module Number: The most common cause is that the module number you are trying to use is already in use by another module in the system.
  Incorrect Data Entry: There may have been a typographical error in the module number you entered.
  System Configuration: The system may not be configured to allow for certain module number ranges, leading to conflicts.
  
  Solution:
  
  
  Check Existing Modules: Before creating a new module, check the existing modules in the system to ensure that the module number you want to use is not already assigned. You can do this by navigating to the relevant transaction code (e.g., PST10 for training modules) and searching for the module number.
  
  
  Choose a Different Module Number: If the module number is already in use, select a different, unique module number that does not conflict with existing entries.
  
  
  Review Module Number Ranges: If you are managing module numbers, ensure that the number range settings in the system allow for the creation of new modules without conflicts. This may involve checking the configuration settings in the SAP system.
  
  
  Consult Documentation: If you are unsure about the module number ranges or how to check existing modules, refer to the SAP documentation or consult with your SAP administrator.
  
  
  Error Handling: If you believe this error is occurring in error (e.g., the module number should be available), you may need to check for any system inconsistencies or consult with SAP support for further investigation.
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as PST10 (for managing training modules) or PST1 (for creating training plans).
  SAP Notes: Check SAP Notes for any known issues or patches related to module management in your version of SAP.
  User Permissions: Ensure that you have the necessary permissions to create or modify modules in the system, as restrictions may also lead to errors.
  
  By following these steps, you should be able to resolve the WU151 error and successfully manage your modules in SAP.