For some of our customers the prices of multiple items are the same. For example all items in the item price group "nuts and bolts" are 55,00/kg.

The data structure of the sales line discount is already set up for this, because there is a Type and Code field
instead of only an Item No. field.

So can the structure of the 3 other price and discount tables made equal to the sales line discount table?
This would also mean there needs to be 3 new tables:
"item purchase discount group"
"item sales price group"
"item purchase price group"
in CAL we would do it our selfs but changing the primairy key isn't allowed in AL.

Also the EnumTypeId so be set in all these 4 tables in the Type and Sales Type option fields so BC partners can extend the tables with extra options of there choice.