How To Fix M3370 - Reference unit cannot be copied (new base unit &)

M3370 - Overview

• Message type: E = Error

• Message class: M3 - Material Master

• Message number: 370

• Message text: Reference unit cannot be copied (new base unit &)

What causes this issue?

The conversion factors cannot be proposed as default values from the
reference material, because the two materials have different units of
measure.

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?

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message M3370 - Reference unit cannot be copied (new base unit &) ?

  The SAP error message M3370, which states "Reference unit cannot be copied (new base unit &)," typically occurs in the context of material master data management, particularly when dealing with units of measure (UoM) in SAP.
  
  Cause:
  This error usually arises when you are trying to create or change a material master record and the system detects an inconsistency or conflict with the units of measure. Specifically, it indicates that the reference unit of measure cannot be copied to the new base unit of measure you are trying to set. This can happen due to several reasons:
  
  Incompatible Units of Measure: The new base unit of measure you are trying to assign may not be compatible with the existing reference unit of measure.
  Missing Configuration: The necessary configuration for the new unit of measure may not be set up in the system.
  Incorrect Material Type: The material type you are working with may have restrictions