BDC steps differ when inputing same record with different other field value

Question

CODEDATE--
ETC...(there is of course other field)
11----01.10.2007   (do process A C D)
12----01.10.2007   (do process A C D)
12----01.11.2007   (Having same code field so do process A B C D)
13----01.11.2007   (do process A C D)
14----01.10.2007   (do process A C D)
15----01.11.2007   (do process A C D)
15----01.12.2007   (Having same code field so do process A B C D)
16----01.10.2007   (do process A C D)
hi i am doing a BDC batch my input table a bit like above.
first record will do process A C D
second record will do process A C D
thirt record will do process A B C D
second record will do process A C D
Any hint of how i can do that plzzzz .  Urgent helppp needed

Answer 1

as per understanding,
if code = 11 and date = 01.10.2007 then u need process A C and D  right.
define 4 subrountine with A B C D logics.
define one more subroutine with SR1 and SR2.
inside SR1 call 3 subroutines A C D
and SR2 call A B C D.
if code = 11 and date = 01.10.2007 then
call subroutine SR1,
if if code = 12 and date = 01.11.2007 then call Subroutine SR2.
if u have any issue, let me know the detailed requirement.