SAP Message 06766 - Conversion factor replaced by one already defined

Diagnosis
The factor for converting the base unit ofmeasure into the purchase order unit or thepurchase order price unit into thepurchase order unit has been changed. The information came either fromthe material master record or from the info record.

Procedure
Please check the new conversion factor for correctness. If necessary,change it.
Note
In a PO item, it is not possible to change the factor for convertingthe purchase order price unit into the purchase order unit if theformer is identical to the base unit of measure.