Dear sai,
If about purchase orders -
Just try any t.code me2l, or me2m.
In above t.code just put input parameter as follows,
1) As per - vendor or material (If needed as input)
2) Scope of list - BEST
3) Selection parameters- open GR
4) Document type - type of PO.
Execute and will get open or closed PO according to selection of 3rd point.
With best regards,
Manish K. Bachate