I want to ask about amount type 500 in SAP FM.
What's the meaning of adjustment by follow-on document? What document or process which caused the amount type 500 appear in actual line item report?
I have a PO $100 created by doc. date 17.07.2012 --> in line item report amount type 0100, value type Purchase Order, amount $100.
Staff parked invoice related to PO on 18.07.2012 --> in line item report amount type 0500, value type Purchase Order, amount -$100.
So, budget seems like not decreased and still there's $100. But actually the case is budget already consumed $100 when PO created.
What's exactly happen in FM?
How amount type 500 appear in the report?
Thank you all.