How To Fix RSUOM138 - &1. No corresponding base units of measure

SAP Error Message - Details

• Message type: E = Error

• Message class: RSUOM - BW: Conversion of Units of Measure

• Message number: 138

• Message text: &1. No corresponding base units of measure

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

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Smart SAP Assistant

• What is the cause and solution for SAP error message RSUOM138 - &1. No corresponding base units of measure ?

  The SAP error message RSUOM138 typically indicates that there is no corresponding base unit of measure defined for a specific unit of measure in the system. This can occur in various contexts, such as when working with material master data, inventory management, or during the creation of purchase orders or sales orders.
  Cause:
  
  Missing Base Unit of Measure: The primary cause of this error is that the unit of measure you are trying to use does not have a defined base unit of measure in the system.
  Incorrect Configuration: The configuration settings for units of measure may not be set up correctly in the system.
  Material Master Data Issues: The material master record may not have the necessary unit of measure data maintained.
  
  Solution:
  
  
  Check Unit of Measure Configuration:
  
  Go to the transaction code OMN3 (or CUNI for unit of measure conversion) to check the configuration of units of measure.
  Ensure that the unit of measure you are trying to use has a corresponding base unit of measure defined.
  
  
  
  Maintain Material Master Data:
  
  Use transaction code MM02 to change the material master record.
  Navigate to the "Basic Data" or "Purchasing" views and check the units of measure section.
  Ensure that the base unit of measure is correctly assigned and that the unit of measure you are trying to use is included in the list of allowed units.
  
  
  
  Create or Update Unit of Measure:
  
  If the unit of measure does not exist, you may need to create it using transaction code CUNI.
  Define the new unit of measure and link it to the appropriate base unit of measure.
  
  
  
  Check for Customizations:
  
  If your organization has custom developments or enhancements, ensure that they are not interfering with the standard unit of measure functionality.
  
  
  
  Consult Documentation:
  
  Review SAP documentation or help resources for additional guidance on units of measure and their configuration.
  
  
  
  Related Information:
  
  Transaction Codes:
  
  MM02: Change Material Master
  CUNI: Maintain Units of Measure
  OMN3: Define Units of Measure
  
  
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message.
  User Roles and Authorizations: Ensure that you have the necessary authorizations to make changes to material master data and unit of measure configurations.
  
  By following these steps, you should be able to resolve the RSUOM138 error and ensure that the necessary units of measure are correctly configured in your SAP system.