How To Fix KS051 - New unit of measure &1 does not match existing units

SAP Error Message - Details

• Message type: E = Error

• Message class: KS - RK-S Master Data Maintenance

• Message number: 051

• Message text: New unit of measure &1 does not match existing units

What causes this issue?

Another unit of measure &3 was defined in other validity periods for
cost element &2. The unit of measure &1 entered in the current interval
cannot be converted to the other unit of measure &3.

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 unit of measure which can be converted to the units of measure
in the other intervals.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message KS051 - New unit of measure &1 does not match existing units ?

  The SAP error message KS051, which states "New unit of measure &1 does not match existing units," typically occurs when there is a mismatch between the unit of measure (UoM) being used in a transaction or master data and the units that are already defined in the system for that particular material or cost object.
  Cause:
  
  Unit of Measure Mismatch: The new unit of measure being entered does not correspond to the units already defined for the material or cost object in the system.
  Configuration Issues: The unit of measure settings in the material master or cost center may not be properly configured.
  Data Entry Errors: There may be a typographical error or incorrect selection of the unit of measure during data entry.
  
  Solution:
  
  
  Check Material Master Data:
  
  Go to the material master record (transaction code MM03) and check the units of measure defined for the material. Ensure that the unit you are trying to use is listed there.
  If necessary, add the new unit of measure to the material master using transaction code MM02.
  
  
  
  Review Cost Center or Internal Order Settings:
  
  If the error is related to a cost center or internal order, check the settings for those objects to ensure that the units of measure are correctly defined.
  
  
  
  Adjust Unit of Measure in Transaction:
  
  If you are entering data in a transaction (e.g., creating a cost estimate), ensure that you are selecting the correct unit of measure that matches the existing definitions.
  
  
  
  Consult Configuration:
  
  If you have access to configuration settings, check the configuration for units of measure in the relevant modules (e.g., Controlling, Material Management) to ensure that they are set up correctly.
  
  
  
  User Training:
  
  Ensure that users are trained on the correct units of measure to use in transactions to prevent future occurrences of this error.
  
  
  
  Related Information:
  
  Transaction Codes:
  
  MM03: Display Material Master
  MM02: Change Material Master
  KS01: Create Cost Center
  KS02: Change Cost Center
  
  
  SAP Notes: Check SAP Notes for any specific patches or updates related to this error message.
  Documentation: Review SAP documentation for units of measure and their configuration in the relevant modules.
  
  If the issue persists after following these steps, it may be necessary to consult with your SAP support team or a functional consultant for further investigation.