How To Fix O3123 - Unit of measure group does not exist

SAP Error Message - Details

• Message type: E = Error

• Message class: O3 - IS-Oil: HPM messages (goods movements, QCI, deliveries)

• Message number: 123

• Message text: Unit of measure group does not exist

What causes this issue?

The unit of measure group that is maintained in the material master does
not exist in Customizing or the unit of measure group you attempt to
enter in the material master maintenance is not defined in Customizing.

How to fix this error?

Check your entry or maintain the unit of measure group in Customizing:
<ZK>Industry Solution Oil & Gas (Downstream) -> HPM (Hydrocarbon
Product Management) -> Oil- and Gas-Specific Units of Measure and
Additional Stockkeeping Units -> Define additional stockkeeping units of
measure</> (Transaction O586) .

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message O3123 - Unit of measure group does not exist ?

  The SAP error message O3123, which states "Unit of measure group does not exist," typically occurs when the system is unable to find a specified unit of measure group in the configuration. This can happen in various scenarios, such as when creating or modifying material master records, or during transactions that involve units of measure.
  Cause:
  
  Missing Configuration: The unit of measure group has not been defined in the system.
  Incorrect Input: The unit of measure group specified in the transaction does not match any existing groups in the system.
  Data Migration Issues: If data has been migrated from another system, the unit of measure groups may not have been transferred correctly.
  Authorization Issues: Sometimes, users may not have the necessary authorizations to view or access certain unit of measure groups.
  
  Solution:
  
  
  Check Configuration:
  
  Go to the SAP Easy Access screen and navigate to the configuration for units of measure.
  Use transaction code OMU1 to check if the unit of measure group exists.
  If it does not exist, you can create a new unit of measure group using transaction code OMU1 or through the relevant configuration path in SPRO.
  
  
  
  Verify Input:
  
  Ensure that the unit of measure group you are trying to use is correctly spelled and exists in the system.
  Check the material master record or transaction for any typos or incorrect entries.
  
  
  
  Data Migration:
  
  If the error occurred after a data migration, verify that all necessary unit of measure groups were included in the migration process.
  You may need to re-import or manually create the missing groups.
  
  
  
  Authorization Check:
  
  Ensure that the user has the necessary authorizations to access the unit of measure groups.
  Check with your SAP security team if there are any restrictions on the user roles.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or help files for additional guidance on unit of measure groups and their configuration.
  
  
  
  Related Information:
  
  Unit of Measure Groups: These are used in SAP to define how quantities of materials are measured and converted. Each material can have multiple units of measure associated with it.
  Transaction Codes: Familiarize yourself with relevant transaction codes such as MM01 (Create Material), MM02 (Change Material), and MM03 (Display Material) to manage material master data.
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message.
  
  If the problem persists after following these steps, it may be beneficial to consult with your SAP support team or reach out to SAP support for further assistance.