How To Fix AQ146 - Reference unit is not allowed

SAP Error Message - Details

• Message type: E = Error

• Message class: AQ - Message texts for SAP Query

• Message number: 146

• Message text: Reference unit is not allowed

What causes this issue?

In a statistic or ranked list, you have chosen a reference unit for a
quantity that is not supported by the system.

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?

Choose a valid reference unit.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message AQ146 - Reference unit is not allowed ?

  The SAP error message AQ146, which states "Reference unit is not allowed," typically occurs in the context of materials management or inventory management when dealing with units of measure (UoM) in SAP. This error indicates that the system is encountering a reference unit of measure that is not permitted for the specific transaction or context in which you are working.
  Causes:
  
  Incorrect Unit of Measure Configuration: The reference unit of measure may not be properly defined in the material master or may not be allowed for the specific transaction type.
  Unit of Measure Conversion Issues: There may be issues with the conversion factors between different units of measure, leading to the reference unit being deemed invalid.
  Transaction Context: The error may arise if the reference unit is not compatible with the transaction being performed (e.g., purchasing, sales, or inventory management).
  Material Master Settings: The material master record may not have the correct settings for the reference unit of measure.
  
  Solutions:
  
  
  Check Material Master Data:
  
  Go to the material master record (transaction code MM03) and verify the units of measure defined for the material. Ensure that the reference unit is correctly set up and allowed for the relevant transactions.
  
  
  
  Review Unit of Measure Settings:
  
  Check the configuration of units of measure in the system (transaction code OME1 for UoM settings). Ensure that the reference unit is defined and that conversion factors are correctly set up.
  
  
  
  Adjust Transaction Settings:
  
  If the error occurs during a specific transaction (e.g., purchase order creation), review the settings and ensure that the reference unit is appropriate for that transaction.
  
  
  
  Consult Documentation:
  
  Review SAP documentation or help resources for specific guidance on the error message and related configuration settings.
  
  
  
  Contact SAP Support:
  
  If the issue persists after checking the above points, consider reaching out to SAP support for further assistance, especially if it involves complex configurations or custom developments.
  
  
  
  Related Information:
  
  Unit of Measure Types: Understand the different types of units of measure (base unit, alternative unit, etc.) and how they interact within the SAP system.
  Transaction Codes: Familiarize yourself with relevant transaction codes such as MM03 (Display Material), MM02 (Change Material), and OME1 (Maintain Units of Measure).
  SAP Notes: Check for any SAP Notes related to this error message, as they may provide specific fixes or patches.
  
  By following these steps, you should be able to identify the cause of the AQ146 error and implement a solution to resolve it.