How To Fix MILL_OC038 - Unit of measure & is not allowed

SAP Error Message - Details

• Message type: E = Error

• Message class: MILL_OC - Messages for order combination

• Message number: 038

• Message text: Unit of measure & is not allowed

What causes this issue?

You tried to combine orders the materials of which have different base
units of measure.
However, orders can only be combined if their materials have the same
base unit of measure.

System Response

The system terminates order combination.

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.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message MILL_OC038 - Unit of measure & is not allowed ?

  The SAP error message MILL_OC038, which states "Unit of measure & is not allowed," typically occurs in the context of production planning or material management when the system encounters an invalid or inappropriate unit of measure (UoM) for a specific operation or material.
  
  Cause:
  
  Invalid Unit of Measure: The unit of measure being used for a material or operation is not defined or allowed in the system.
  
  Configuration Issues: The material master or the relevant configuration settings may not have the correct UoM settings.
  Data Entry Errors: There may be a typo or incorrect entry when specifying the unit of measure in the transaction.
  Material Type Restrictions: Certain material types may have restrictions on the units of measure that can be used.
  
  
  Solution:
  
  
  Check Material Master:
  
  Go to the material master record (transaction code MM03) and verify the unit of measure settings.
  Ensure that the UoM you are trying to use is listed in the "Units of Measure" tab.
  
  
  
  Review