How To Fix M2109 - Unit & not possible for key figure &

SAP Error Message - Details

• Message type: E = Error

• Message class: M2 - LIS: Generating and updating info structures

• Message number: 109

• Message text: Unit & not possible for key figure &

What causes this issue?

The source field for field &V4& has the unit &V3&. It is not possible to
to convert from &V3& to &V1&. You can use the possible entries option
to find out which conversions are possible here.

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?

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message M2109 - Unit & not possible for key figure & ?

  The SAP error message M2109 typically indicates that there is an issue with the unit of measure (UoM) for a key figure in a planning scenario, often related to the use of a specific unit that is not compatible with the key figure being processed. This error can occur in various SAP modules, particularly in SAP Integrated Business Planning (IBP) or SAP Advanced Planning and Optimization (APO).
  Cause:
  
  Incompatible Unit of Measure: The unit of measure assigned to the key figure is not compatible with the expected unit for that key figure. For example, if a key figure is defined to accept only "KG" (kilograms) but the data being processed is in "LBS" (pounds), this error may occur.
  Missing Unit of Measure: The key figure may not have a defined unit of measure, or the unit of measure may not be maintained in the master data.
  Configuration Issues: There may be configuration issues in the planning area or the key figure settings that lead to this error.
  Data Integrity Issues: The data being loaded or processed may have integrity issues, such as incorrect or missing values.
  
  Solution:
  
  Check Key Figure Settings: Review the settings for the key figure in the planning area to ensure that the correct unit of measure is assigned.
  Validate Unit of Measure: Ensure that the unit of measure used in the data matches the expected unit of measure for the key figure. If necessary, convert the data to the correct unit.
  Review Master Data: Check the master data for the relevant materials or products to ensure that the unit of measure is correctly defined and maintained.
  Configuration Review: If you have access, review the configuration settings in the SAP system to ensure that there are no discrepancies in the planning area or key figure definitions.
  Data Load Validation: If the error occurs during a data load, validate the data being loaded to ensure it adheres to the expected formats and units.
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message. SAP frequently updates its knowledge base with solutions for common errors.
  Documentation: Refer to the official SAP documentation for the specific module you are working with (e.g., SAP IBP, SAP APO) for detailed information on key figures and units of measure.
  Community Forums: Engage with SAP community forums or user groups where similar issues may have been discussed, and solutions shared.
  
  If the issue persists after following these steps, it may be beneficial to consult with your SAP support team or a technical consultant who can provide deeper insights into the specific configuration and data setup in your environment.