How To Fix REBDMS040 - Not possible to convert unit of measurement &1 to unit of meas. &2

SAP Error Message - Details

• Message type: E = Error

• Message class: REBDMS - Messages for Measurements

• Message number: 040

• Message text: Not possible to convert unit of measurement &1 to unit of meas. &2

What causes this issue?

Converting the units of measurement is not possible.

System Response

The conversion could not be performed. The reason could be one of
the following (among others):
The units of measure have different dimensions.
For example, you try to convert measurement for area
(m?) to a measurement for volume (m?).

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

One of the units of measurement is not defined in the system.

How to fix this error?

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 REBDMS040 - Not possible to convert unit of measurement &1 to unit of meas. &2 ?

  The SAP error message REBDMS040 indicates that there is an issue with converting a unit of measurement (UoM) from one type to another. This typically occurs in scenarios where a conversion is attempted between incompatible units, or when the necessary conversion factors are not defined in the system.
  Cause:
  
  Incompatible Units: The source unit of measurement (UoM) and the target UoM are not compatible for conversion. For example, trying to convert between weight and volume without a defined relationship.
  Missing Conversion Factors: The conversion factors between the two units are not defined in the system. SAP requires these factors to perform the conversion.
  Incorrect Configuration: The configuration settings for units of measurement in the system may be incorrect or incomplete.
  Data Entry Errors: There may be a mistake in the data entry where the wrong UoM is selected.
  
  Solution:
  
  Check UoM Compatibility: Verify that the units you are trying to convert between are compatible. For example, ensure that both units are of the same type (e.g., both are weight units).
  Define Conversion Factors: If the units are compatible but the conversion factors are missing, you need to define the conversion factors in the SAP system. This can typically be done in the configuration settings under:
  
  SPRO ? Logistics General ? Material Master ? Basic Settings ? Define Units of Measure.
  
  
  Review Configuration: Check the configuration settings for units of measurement to ensure they are set up correctly. This includes checking the settings for the specific material or product involved in the transaction.
  Correct Data Entry: Review the data entry for any mistakes. Ensure that the correct UoM is being used in the transaction.
  Consult Documentation: If you are unsure about the units or the conversion factors, consult the SAP documentation or reach out to your SAP support team for assistance.
  
  Related Information:
  
  Unit of Measure (UoM): In SAP, units of measurement are used to define quantities of materials. Each material can have multiple UoMs defined.
  Material Master: The material master record contains all the information about a material, including its units of measurement and conversion factors.
  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.
  
  By following these steps, you should be able to resolve the REBDMS040 error and successfully perform the necessary conversions in SAP.