When we post purchase of items, we have item charges very often. We can post item charges on the same order with items or on different one. In my example, I will use independent document for already receipted items.
In this case, we have the similar rules about using posting groups as we post item purchase. Some posting groups are used from document header, and other from document line, as I already described in older post. But, in this case some of posting groups are inherited from the already posted receipt. You can see all combination on following chart:
When we post this document, we will get G/L Entries as result. You can find completely description of them in next table:
Totovic Dynamics 365 Blog 