How To Fix QA286 - Unit of measure &1 cannot be converted to material base unit of measure

SAP Error Message - Details

• Message type: E = Error

• Message class: QA - QM : Inspection lots

• Message number: 286

• Message text: Unit of measure &1 cannot be converted to material base unit of measure

What causes this issue?

In the order operation, an inspection type is defined for goods receipt
from <ZH>external processing</>. In this case an inspection lot is
created with the goods receipt posting for the material- if this
inspection type is active for the material in the order (&V2&). An
inspection lot always has the unit of measure defined for the material.
The unit of measure entered cannot be converted into the base unit of
measure.

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?

Enter a unit of measure that can be converted into the base unit of
measure, or exit the transaction and maintain this new unit of measure
as an alternative unit of measure for the material.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message QA286 - Unit of measure &1 cannot be converted to material base unit of measure ?

  The SAP error message QA286, which states "Unit of measure &1 cannot be converted to material base unit of measure," typically occurs in the context of quality management or inventory management when there is an issue with the unit of measure (UoM) conversion for a material.
  Cause:
  
  Incorrect Unit of Measure Configuration: The unit of measure defined for the material may not have a valid conversion factor to the base unit of measure (UoM) defined in the material master.
  Missing Conversion Factors: The conversion factors between the unit of measure used and the base unit of measure may not be set up in the material master.
  Inconsistent UoM Usage: The unit of measure being used in the transaction may not be compatible with the base unit of measure defined for the material.
  Material Master Data Issues: There may be issues with the material master data, such as missing or incorrect entries in the UoM fields.
  
  Solution:
  
  
  Check Material Master Data:
  
  Go to the material master record (transaction code MM03) and check the "Basic Data" and "Purchasing" views.
  Ensure that the base unit of measure is correctly defined and that the unit of measure you are trying to use has a valid conversion factor to the base unit.
  
  
  
  Define Conversion Factors:
  
  If the conversion factors are missing, you can define them in the material master under the "Units of Measure" section. Make sure to specify the correct conversion ratio.
  
  
  
  Review UoM Settings:
  
  Check the configuration of units of measure in the system (transaction code OMT3). Ensure that the units of measure are correctly defined and that they can be converted to the base unit of measure.
  
  
  
  Check for Inconsistencies:
  
  Ensure that the unit of measure being used in the transaction is consistent with the units defined in the material master. If you are using a custom unit of measure, verify that it is set up correctly.
  
  
  
  Consult Documentation:
  
  If the issue persists, consult SAP documentation or reach out to your SAP support team for further assistance.
  
  
  
  Related Information:
  
  Transaction Codes:
  
  MM03: Display Material Master
  OMT3: Maintain Units of Measure
  
  
  SAP Notes: Check for any relevant SAP Notes that may address specific issues related to unit of measure conversions.
  Quality Management: If this error occurs during quality inspection, ensure that the inspection lot is using the correct units of measure.
  
  By following these steps, you should be able to identify and resolve the issue causing the QA286 error message in SAP.