Message type: E = Error
Message class:  PRC_CNV - Messages for Conversion Engine 
Message number: 011
Message text: No alternative quantity units have been provided
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The SAP error message PRC_CNV011 indicates that there are no alternative quantity units provided for a particular material or product in the system. This error typically arises during processes that involve conversion between different units of measure, such as during the creation of purchase orders, sales orders, or inventory management.
Cause: Missing Alternative Units of Measure: The material master record does not have alternative units of measure defined. This can happen if the material was created without specifying these units.
Configuration Issues: The configuration settings in the system may not be set up correctly to handle alternative units of measure. Data Migration Issues: If data was migrated from another system, the alternative units of measure may not have been included or properly mapped.
Solution: Check Material Master: Go to the material master record (transaction code MM03). Check the "Basic Data" and "Sales Org. Data" views to see if alternative units of measure are defined. If they are missing, you
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