Get PR/PO list for a logged in User id

Hii All,

I Need table and field name of PR/PO Approver.

Req : I need to fetch PR/PO list for a logged in User id.

Information I have :

From EBAN table we can get PR List. Release  code , Purch. Group, Release strategy.

Here I need to what exact field do I need to map for a logged in User id for fetching  list of PR numbers.

Same way for PO ?

Table we need to use are : EKKO, T16FS .

BAPI_REQUISITION_GETRELINFO - This BAPI provides information of release code and release strategy, but I need Logged in User id field from which I can fetch PR/PO list .

Please suggest.