SAP Message 8B317 - Unit of measure &1 cannot be converted to &2

Diagnosis
To calculate certain taxes (e.g. 'IPI Pauta' or 'Sub.Trib.') inBrazilian tax calculation, you have to convert quantities using variousunits of measure. This conversion is not possible using the units ofmeasure you have specified.

Procedure
Maintain the conversion rules for the units of measure specified or useother units of measure for this particular business transaction.