How To Fix UMC066 - Unit or currency not defined uniquely

SAP Error Message - Details

• Message type: E = Error

• Message class: UMC - General Messages

• Message number: 066

• Message text: Unit or currency not defined uniquely

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 UMC066 - Unit or currency not defined uniquely ?

  The SAP error message UMC066 ("Unit or currency not defined uniquely") typically occurs when there is ambiguity in the unit of measure or currency being used in a transaction or configuration. This can happen in various contexts, such as when creating or processing purchase orders, sales orders, or other documents that involve units of measure or currencies.
  Cause:
  
  Ambiguous Configuration: The system may have multiple entries for the same unit of measure or currency, leading to confusion about which one to use.
  Missing Definitions: The unit of measure or currency may not be defined in the system, or it may not be properly linked to the relevant master data (like material master, vendor master, etc.).
  Incorrect Data Entry: Users may have entered a unit of measure or currency incorrectly, leading to a mismatch with the expected values in the system.
  
  Solution:
  
  
  Check Configuration:
  
  Go to the relevant configuration settings in SAP (e.g., transaction codes like OME1 for units of measure or OX19 for currencies).
  Ensure that the units of measure and currencies are defined uniquely and correctly.
  
  
  
  Review Master Data:
  
  Check the master data for the materials, vendors, or customers involved in the transaction. Ensure that the units of measure and currencies are correctly assigned and that there are no duplicates.
  Use transaction codes like MM03 (Material Master), XK03 (Vendor Master), or XD03 (Customer Master) to review the data.
  
  
  
  Data Consistency:
  
  Ensure that the unit of measure and currency used in the transaction match those defined in the master data.
  If necessary, update the master data to ensure consistency.
  
  
  
  Transaction Review:
  
  Review the specific transaction that triggered the error. Check for any inconsistencies in the data entry, such as typos or incorrect selections.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or help resources for specific guidance on the error message and related configuration settings.
  
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes for checking and maintaining units of measure and currencies.
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message.
  User Roles and Authorizations: Ensure that the user has the necessary authorizations to view and modify the relevant master data and configuration settings.
  
  If the issue persists after following these steps, it may be beneficial to consult with your SAP support team or a functional consultant who specializes in the relevant area.