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

KS051 - Overview

• 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