How To Fix WU156 - Mass maintenance not possible without an amount or percentage

SAP Error Message - Details

• Message type: E = Error

• Message class: WU - Promotion management messages

• Message number: 156

• Message text: Mass maintenance not possible without an amount or percentage

What causes this issue?

You have not entered an amount or a percentage.

System Response

Mass maintenance is not possible.

How to fix this error?

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Procedure for System Administrators

Enter either an amount or a percentage.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message WU156 - Mass maintenance not possible without an amount or percentage ?

  The SAP error message WU156, which states "Mass maintenance not possible without an amount or percentage," typically occurs in the context of mass maintenance activities in SAP, particularly when dealing with financial data or pricing conditions. This error indicates that the system requires either an amount or a percentage to perform the mass maintenance operation, and neither has been provided.
  Cause:
  
  Missing Data: The most common cause of this error is that the user has not entered any values for the amount or percentage fields in the mass maintenance screen.
  Incorrect Configuration: There may be a configuration issue where the system expects certain fields to be filled out based on the type of mass maintenance being performed.
  Data Validation: The system may have validation rules that require specific fields to be populated before proceeding with the mass maintenance.
  
  Solution:
  
  Enter Required Values: Ensure that you fill in the required fields for amount or percentage before attempting to execute the mass maintenance. Check the specific fields that are mandatory for the operation you are trying to perform.
  Review Configuration: If you believe you have entered the correct data but still receive the error, review the configuration settings related to the mass maintenance process. This may involve checking the relevant customizing settings in the SAP system.
  Check Documentation: Refer to the SAP documentation or help files related to the specific mass maintenance transaction you are using. This can provide insights into what fields are required.
  Consult with SAP Support: If the issue persists, consider reaching out to your SAP support team or consulting SAP Notes for any known issues or patches related to this error message.
  
  Related Information:
  
  Transaction Codes: The error may occur in various transaction codes related to mass maintenance, such as MM17 (Mass Maintenance of Material Master), VK31 (Mass Maintenance of Pricing Conditions), etc.
  User Roles: Ensure that the user has the appropriate authorizations to perform mass maintenance activities.
  SAP Notes: Check for any relevant SAP Notes that might address this specific error or provide additional troubleshooting steps.
  Testing: If possible, test the mass maintenance process in a development or quality assurance environment to replicate the issue and identify the root cause without affecting production data.
  
  By following these steps, you should be able to resolve the WU156 error and successfully perform the mass maintenance operation in SAP.