Document splitting during fb60 not happening even its activated

Question

we are making a simple entry
expense dr    6000     proft center 1
expense dr   4000      profit center 2
vendor   cr   10000 
after we post our document what we should get is
expense   dr     6000     profit center 1
expense   dr     4000     profit center 2
            vendor     cr     6000    profit center  1
            vendor     cr     4000    profit cente   2
but its not happening
when we simulated this doc splitted document we get
expense   dr     6000     profit center 1
expense   dr     4000     profit center 2
            vendor     cr     6000    profit center  1
            vendor     cr     4000    profit cente   1
our configuration for doc splitt is
        parameters                           value
1    ref   transaction                      bkpf
2.   splitting method                     0000000012
3    B. transac                             0300
4.   B.trans variable                    0001
5.   derv via doc type                   KR
6   comp code                            2600
7   zero bal method                     p
where is the problem or the error due to which it is not picking up the correct profit center or correct segment while splitting up the document.

Answer 1

where to check for authorisation?
secondly where we have activated in doc splitting we have ticked everything
doc splitting
inheritance and std acc asignment and for constant we have filled zabc which contains business area and segment and no profit center and segment contains 9999 as default  profitcenter.