How To Fix M3336 - Unit of measure & used as alternative unit

M3336 - Overview

• Message type: E = Error

• Message class: M3 - Material Master

• Message number: 336

• Message text: Unit of measure & used as alternative unit

What causes this issue?

You have changed the base unit of measure to a unit that is already
used as an alternative unit of measure.

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.

M3336 - Details

• The SAP error message M3336 indicates that there is an issue with the unit of measure (UoM) being used in a transaction. Specifically, it states that the unit of measure is being used as an alternative unit but is not defined correctly in the system. This can occur in various scenarios, such as when creating or modifying material master records, purchase orders, or sales orders.
  
  Cause:
  
  Incorrect Configuration: The unit of measure may not be properly configured in the material master record. This can happen if the alternative unit of measure is not defined or if there is a mismatch between the base unit of measure and the alternative unit.
  Missing Data: The alternative unit of measure may not be assigned to the material in the material master.
  Inconsistent Data: There may be inconsistencies in the data related to the unit of measure, such as incorrect conversion factors or missing entries in the unit