How To Fix MM328 - Quantities cannot be converted for the material &

SAP Error Message - Details

• Message type: E = Error

• Message class: MM - Messages for material master maintenance and Customizing

• Message number: 328

• Message text: Quantities cannot be converted for the material &

What causes this issue?

The quantity or quantities could not be converted from one unit of
measure to another because the specified alternative unit of measure
cannot be converted to 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?

Specify the conversion factors for the alternative unit of measure in
the material master record &V1&.
Industry
<DS:TRAN.MM02>Proceed</>
Retail
<DS:TRAN.MM42>Proceed</>

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 MM328 - Quantities cannot be converted for the material & ?

  The SAP error message MM328 ("Quantities cannot be converted for the material &") typically occurs in the Materials Management (MM) module when there is an issue with the conversion of quantities for a specific material. This error can arise in various scenarios, such as during goods movements, inventory management, or when performing transactions that involve quantity conversions.
  Causes of MM328 Error
  
  
  Missing Conversion Factors: The material may not have the necessary conversion factors defined in the material master for the units of measure (UoM) being used.
  
  
  Incorrect Unit of Measure: The unit of measure used in the transaction may not be compatible with the unit of measure defined in the material master.
  
  
  Material Master Data Issues: There may be inconsistencies or missing data in the material master record, such as the base unit of measure or alternative units of measure.
  
  
  Configuration Issues: The configuration settings for units of measure in the system may not be set up correctly, leading to conversion issues.
  
  
  Stock Type Issues: The stock type (e.g., unrestricted, quality inspection, blocked) may not allow for the conversion of quantities.
  
  
  Solutions to MM328 Error
  
  
  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 base unit of measure and any alternative units of measure are correctly defined.
  
  
  
  Define Conversion Factors:
  
  If conversion factors are missing, you can define them in the material master under the "Units of Measure" view. Make sure to specify the correct conversion factors between the base unit and alternative units.
  
  
  
  Review Transaction Data:
  
  Check the transaction you are trying to perform and ensure that the units of measure used are valid and compatible with the material master.
  
  
  
  Configuration Check:
  
  If you have access to configuration settings, check the settings for units of measure in the customizing (transaction code SPRO). Ensure that the UoM settings are correctly configured.
  
  
  
  Consult Documentation:
  
  Review SAP documentation or help resources for additional guidance on handling unit of measure issues.
  
  
  
  Contact Support:
  
  If the issue persists after checking the above points, consider reaching out to your SAP support team or consulting with an SAP expert for further assistance.
  
  
  
  Related Information
  
  
  Transaction Codes:
  
  MM03: Display Material Master
  MM02: Change Material Master
  SPRO: Customizing Implementation Guide
  
  
  
  SAP Notes: Check for any relevant SAP Notes that may address specific issues related to the MM328 error.
  
  
  User Forums: Consider visiting SAP community forums or user groups where similar issues may have been discussed.
  
  
  By following these steps, you should be able to identify and resolve the cause of the MM328 error in SAP.