Hi Ruksana
When you post actual Goods Issue and Activity confirmation for Product cost collector through back flash (MFBF) system consider the setting in PPP3 to value the cost of consumption of goods issued and activity hrs to calculate actual cost of production.
This variant is called actual because it calculate actual cost of goods issued and actual cost of activity confirmed.
Diff between PREM and PPP3 is for repetitive manufacturing order at cost collector level
PPC1 for standard cost calculation which is used to value GR level for SFG/FG product
Kamal