Hi Thilini,
The message indicates that a Quantity Conversion Type (R3TR UOMT) is used in the Transformation but is missing in your transport request. Please try to find out which Quantity Conversion Type is used in the Transformation and include it in the transport request
You can use t/code RSUOM to transport your Quantity Conversion Type. Alternatively, you can use the Transport Connection.
Best regards,
Sander