Howto find BAPI/FM for a certain purpose...

Hi,

I'm having trouble finding some BAPI/FM that does this kind of stuff.

1. Get a list of PurchaseOrders based on WERKS and MATNR. Output should be EBELN, DATE, QTY ...

2. Get a list of SalesOrders that are not yet delivered, based on WERKS MATNR. Output VBELN etc...

3. Get a list of item child. Based on a Mother Matnr as input.

4. Pointers in how to find BAPI/FM in the future....

//Martin