Diagnosis
You are processing an item in one of the following situations:
RESET N1
The item has the Fixed quantity indicator selected, and you wantto allocate the item to an alternative item group.
The item is allocated to an alternative item group, and you want toselect the Fixed quantity indicator.
Fixed quantities are not supported for alternative items.

Procedure
Decide whether you want to select the Fixed quantity indicatorfor the item or allocate the item to an alternative item group.