Pls. tell place in whole sap where purchase order field can be made req.

Question

can anyone tell me all those t.codes from where i can make purchase order a required field.
i want to have control through purchase order.
is it possible to have control if i make sorting key 014 in vendor recon account. and fsg g067 contains purchase order a required field. plus bank fsg g005 also contains purchase order as compulsory field.
our problem is that whenever we see any vendors account open items , we are not able to see purchase order no in purchasing document. column.
what i know is that using ob41 i can make po as required field for posting key 39 used for adv pmnt request, plus make po as sorting key plus, fsg g067 containd po required field.
can any one help on this?

Answer 1

question is still not answered.
problem starts when fi person looks into vendors account.
if vendor ram is to be paid rs 503456 regarding one of po and rs 503465 regarding any other po.
but when these balances are being reflected in vendor account, fi person is not able to differentiate which amt relates to which po as no po no. is reflected as result of t,code fbl1n.
so in that case it is possible that wrong pmnt is made to wrong po.
my only problem is that how can we see this po no in purchasing document column. where in cofiguration there is problem?.