SAP Message QE157 - If you enter an * the target value is entered in the offset field

Diagnosis
You can define an additive offset constant that influences the way inwhich orginal values are displayed or entered. The additive offsetconstant impacts only the representation of the characteristic valueson the screen and is either added to or subtracted from the originalvalues.

Procedure
Enter an * in the 'Offset' field. The system then places the defaulttarget value in this field.