How To Fix QB122 - Quantities cannot be converted

SAP Error Message - Details

• Message type: E = Error

• Message class: QB - Message IDs for QM in procurement

• Message number: 122

• Message text: Quantities cannot be converted

What causes this issue?

One of the conversion factors is not maintained in the material.

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?

Maintain the conversion factors in the material.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message QB122 - Quantities cannot be converted ?

  The SAP error message QB122, which states "Quantities cannot be converted," typically occurs in the context of inventory management and material movements. This error is related to issues with unit of measure (UoM) conversions, particularly when trying to convert quantities between different units of measure that are not compatible or properly defined in the system.
  Causes of Error QB122
  
  
  Incorrect Unit of Measure Configuration: The units of measure for the material may not be correctly defined in the material master. This includes the base unit of measure and any alternative units of measure.
  
  
  Missing Conversion Factors: If the conversion factors between different units of measure are not set up correctly in the system, SAP will not be able to convert quantities.
  
  
  Inconsistent UoM Usage: The system may be trying to convert quantities that are not compatible due to inconsistent usage of units in transactions or master data.
  
  
  Material Master Issues: There may be issues with the material master data, such as missing or incorrect entries in the unit of measure section.
  
  
  Transaction Type Restrictions: Certain transaction types may have restrictions on the units of measure that can be used, leading to conversion issues.
  
  
  Solutions to Error QB122
  
  
  Check Material Master Data:
  
  Go to the material master (transaction code MM03) and verify the unit of measure settings.
  Ensure that the base unit of measure and any alternative units of measure are correctly defined.
  
  
  
  Review Conversion Factors:
  
  Check the conversion factors for the units of measure in the material master. Ensure that they are correctly set up and that there are no missing entries.
  
  
  
  Correct Transaction Data:
  
  Review the transaction data where the error occurred. Ensure that the quantities and units of measure being used are compatible and correctly entered.
  
  
  
  Update UoM Settings:
  
  If necessary, update the unit of measure settings in the configuration (transaction code OMT3) to ensure that all required units are defined and that conversion factors are set.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or help resources for specific guidance on unit of measure configuration and troubleshooting.
  
  
  
  Contact SAP Support:
  
  If the issue persists after checking the above points, consider reaching out to SAP support for further assistance.
  
  
  
  Related Information
  
  
  Unit of Measure Configuration: Understanding how units of measure are configured in SAP is crucial. This includes knowing how to set up base units, alternative units, and conversion factors.
  
  
  Material Master Data: Familiarity with the material master data structure and how it impacts inventory management and transactions can help prevent similar issues.
  
  
  Transaction Codes: Common transaction codes related to material management and unit of measure include:
  
  MM01: Create Material
  MM02: Change Material
  MM03: Display Material
  OMT3: Maintain Units of Measure
  
  
  
  By addressing the underlying causes of the QB122 error, you can resolve the issue and ensure smooth operations in your SAP environment.