Residual items processing in FI
For my program, I have to check for fully paid customer invoices and send a flag to another system if it is fully paid. I have to check whether an invoice is closed with residual payments also, if residual items are present for an invoice I should not send the flag.
I'm quite new to FI, so please guide me:
1. How to check whether residual items are present for a closed invoice?
2. To test,how can I do an incoming payment with residual items? (I heard if we pay $80 for a $100 invoice using the residue option, SAP will close the invoice as a fully paid invoice and create another invoice for $20)
3. How will be the original invoice and the invoice created for the residual amounts be linked?
4. Can anyone provide me a link or document containing FI basics?
5.Can anyone provide me all FI related transactions and tables?
If anyone can guide me, it will be really helpful. Thanks.