How To Fix MM108 - No alternative unit of measure specified

SAP Error Message - Details

• Message type: E = Error

• Message class: MM - Messages for material master maintenance and Customizing

• Message number: 108

• Message text: No alternative unit of measure specified

What causes this issue?

You want the system to convert from the base unit of measure to an
alternative unit of measure for the current material. However, this
alternative unit of measure is missing.

System Response

The system cannot carry out the conversion.

How to fix this error?

This is due to a program error that should not occur. Please contact
your system(s) administrator.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message MM108 - No alternative unit of measure specified ?

  The SAP error message MM108, which states "No alternative unit of measure specified," typically occurs in the Materials Management (MM) module when there is an issue with the unit of measure (UoM) configuration for a material. This error can arise in various scenarios, such as during the creation of purchase orders, goods receipts, or inventory management activities.
  Cause:
  
  Missing Alternative UoM: The material master record does not have an alternative unit of measure defined. This is particularly relevant when the system expects an alternative UoM to be specified for certain transactions.
  Incorrect Configuration: The configuration settings for the material may not be set up correctly, leading to the absence of alternative UoMs.
  Transaction Type: The transaction being performed may require an alternative UoM, but it has not been defined in the material master.
  
  Solution:
  
  
  Check Material Master Record:
  
  Go to the transaction code MM02 (Change Material) or MM03 (Display Material).
  Enter the material number and select the appropriate views (e.g., Basic Data, Purchasing).
  Check if the alternative unit of measure is defined in the "Units of Measure" section. If it is missing, you will need to add it.
  
  
  
  Define Alternative UoM:
  
  If the alternative UoM is not defined, you can add it by:
  
  Selecting the "Units of Measure" view in the material master.
  Entering the alternative unit of measure and the conversion factor relative to the base unit of measure.
  
  
  
  
  
  Review Configuration:
  
  If you are unsure about the configuration, consult with your SAP MM configuration team to ensure that the settings for units of measure are correctly defined in the system.
  
  
  
  Check Transaction Requirements:
  
  Review the specific transaction you are trying to perform to ensure that it indeed requires an alternative unit of measure. If it does not, you may need to adjust your process or settings accordingly.
  
  
  
  Related Information:
  
  Unit of Measure Types: Understand the different types of units of measure (base unit, alternative unit, etc.) and how they relate to each other.
  Conversion Factors: Be aware of how conversion factors work between different units of measure, as this can affect inventory management and purchasing processes.
  SAP Documentation: Refer to SAP Help documentation for detailed information on material master data and unit of measure settings.
  User Roles: Ensure that you have the necessary permissions to make changes to the material master data.
  
  By following these steps, you should be able to resolve the MM108 error and ensure that your material master records are correctly configured for the transactions you are performing.