Business Transaction Events

[Koti Tummuru]

I need a small help with these transactions.  I am having a very hard time
with this.  Let me give a small background of what I need so that you all
can guide me in a proper way.
 
Before posting an FI Document I need to Validate certain conditions based on
the whole document and need to do some operation based on the data passed.
I went into FIBF transaction and tried some scenario's but couldn't make it
to work.  Then I went through the Business Transaction Event Wizard
SWU_EWBTE Transaction to create the event.  It is giving me an error message
" Open FI exit 1050 does not exist"  I went into debugging and checked the
code it is checking in the table AWU_FI. There are no entries maintained in
this table.
 
I am basically an ABAPER and doesn't know much about customizing ? Can you
guys please guide me in this process of building this I used debugging and
replace option but it is failing on some other issues.  Can you please guide
me the whole steps / procedure if you know.
 
 
 
Regards,
 
Koti,