How To Fix MC_LO_VCHCLF027 - Characteristic &1: only &2 is allowed as unit of measure

SAP Error Message - Details

• Message type: E = Error

• Message class: MC_LO_VCHCLF - Message Class for Variant Configuration and Classification

• Message number: 027

• Message text: Characteristic &1: only &2 is allowed as unit of measure

What causes this issue?

The charateristic value contains a unit of measure that is different
from the unit of measure defined in the characteristic master data.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Change the unit of measure of the characteristic value to the unit of
measure defined in its correspinding characteristic master data.
Different units of measure for the charateristic and charateristic value
are not supported.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message MC_LO_VCHCLF027 - Characteristic &1: only &2 is allowed as unit of measure ?

  The SAP error message MC_LO_VCHCLF027 indicates that there is an issue with the unit of measure (UoM) assigned to a characteristic in a material or a document. Specifically, it states that only a certain unit of measure (denoted as &2) is allowed for the characteristic (denoted as &1). This error typically occurs in the context of logistics, inventory management, or production planning where specific characteristics are defined for materials.
  Cause:
  
  Incorrect Unit of Measure: The characteristic you are trying to use is associated with a specific unit of measure, and the system is detecting that the unit you are trying to use does not match the allowed unit.
  Configuration Issues: The configuration of the material master or the characteristic settings may not be aligned with the expected units of measure.
  Data Entry Errors: There may be a mistake in data entry where an incorrect unit of measure was selected or entered.
  
  Solution:
  
  Check Characteristic Settings: Review the settings for the characteristic in question. Ensure that the unit of measure you are trying to use is indeed allowed for that characteristic.
  Correct the Unit of Measure: If you have mistakenly entered an incorrect unit of measure, change it to the allowed unit (as indicated by &2 in the error message).
  Review Material Master Data: Check the material master data for the material associated with the characteristic. Ensure that the unit of measure is correctly defined and matches the expected values.
  Consult Configuration: If you have access to the configuration settings, verify that the characteristic and its allowed units of measure are correctly configured in the system.
  User Training: If this error is occurring frequently, consider providing training to users on the correct units of measure to use for different characteristics.
  
  Related Information:
  
  Transaction Codes: You may need to use transaction codes like MM03 (Display Material), MM02 (Change Material), or CT04 (Create Characteristic) to review and modify the relevant data.
  Documentation: Refer to SAP documentation or help files for more detailed information on characteristics and units of measure.
  SAP Notes: Check for any relevant SAP Notes that may address known issues or provide additional guidance on this error message.
  
  If the problem 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 module.