How To Fix WU355 - External number assignment not allowed for promotion type &

SAP Error Message - Details

• Message type: E = Error

• Message class: WU - Promotion management messages

• Message number: 355

• Message text: External number assignment not allowed for promotion type &

What causes this issue?

You entered a promotion number. However, external number assignment is
not possible for promotion type &V1&.

System Response

The system cannot create the promotion.

How to fix this error?

Omit the promotion number or assign an external number range in in
Customizing for <DS:SIMG.W_ZF_VK_0220>promotion type
</> &V1&.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message WU355 - External number assignment not allowed for promotion type & ?

  The SAP error message WU355, which states "External number assignment not allowed for promotion type &," typically occurs in the context of promotions in SAP, particularly when dealing with the assignment of external numbers to promotion types that do not support it.
  Cause:
  The error arises when you attempt to assign an external number (like a number from an external numbering system) to a promotion type that is configured to only allow internal number assignment. This can happen if:
  
  The promotion type is set up in a way that does not permit external number assignment.
  There is a configuration issue in the promotion type settings.
  The system is trying to use an external number for a promotion type that is not designed to handle it.
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Check Promotion Type Configuration:
  
  Go to the configuration settings for the promotion type in question. This can usually be found in the SAP Customizing Implementation Guide (IMG) under the relevant module (e.g., Sales and Distribution).
  Verify if the promotion type is set to allow external number assignment. If it is not, you may need to change the configuration to allow it or use an internal number instead.
  
  
  
  Use Internal Number Assignment:
  
  If the promotion type does not support external number assignment, consider using internal number assignment for the promotion. This means allowing the system to generate the promotion number automatically.
  
  
  
  Consult Documentation:
  
  Review the SAP documentation or help files related to promotion types and number assignment to understand the specific requirements and limitations.
  
  
  
  Check User Authorizations:
  
  Ensure that the user attempting to create or modify the promotion has the necessary authorizations to perform the action.
  
  
  
  Contact SAP Support:
  
  If you are unable to resolve the issue through configuration changes, consider reaching out to SAP support for further assistance.
  
  
  
  Related Information:
  
  Transaction Codes: You may need to use transaction codes like SPRO to access the configuration settings or VK11/VK12 for maintaining pricing conditions related to promotions.
  Promotion Types: Familiarize yourself with the different promotion types available in your SAP system and their respective configurations.
  Number Ranges: Check the number range settings in your SAP system to ensure they are correctly configured for the types of promotions you are working with.
  
  By following these steps, you should be able to address the WU355 error and successfully manage your promotion types in SAP.