Field help (SAUSTUCOE1) 

This is the conversion factor between the sales unit and the stock unit. This coefficient can be modified in certain cases. It can be edited if the sales unit of the product has been specified as 'editable', or if the chosen packing unit has also been specified as 'Editable' (See Product record). It cannot be edited if the unit used is a unit defined for the customer. If units are used where the factor is modifiable, it is necessary to define for the product concerned, only prices expressed in stock unit. In addition, if a basic price list has been defined for the sales unit, the modification of the conversion factor for the sales unit does not trigger a recalculation of the unit gross price.

SEEINFO Once the line entered, it is no longer possible to modify the conversion factor. The line must be deleted and recreated so as to modify the factor.