Output documents and SAP Scripts

Question

We have an ever increasing problem with Sap Scripts and driver programs for Output Documents. There is a lot of hard coded stuff in the driver programs based on output type.
I
If nast-kschl = 'XX'
Do something
elseif nast-kschl = 'YY'
Do something else
Endif
This is causing a lot of maintainance problems. Logically, such conditional behavior is required. We need to execute different logic for different output types. Similarly there are hard coded conditions based on parameters.
for e.g.
select * from knvk where kunnr = hardcoded and abtnr = hardcoded
The problem is that all this custom hard coded logic is dispersed through out the program and it becomes difficult to maintain them.
I was wondering how folks on SDN have tackled this problem at your various clients.

Answer 1

S Kumar -
I think you may have misunderstood my original question.
Consider this scnerio:
If nast-kschl = 'XX'
     var1 = A
     var2 = B
elseif nast-kschl = 'YY'
     var1 = C
     var2 = D
Endif
This is a simplified version of what the problem is. There are many output types and many different business logic that are conditionally applied. This is creating havoc in my driver programs. Plus these are 10 year old driver programs. They have been maintained over and over again and numerous changes have taken place.
We would not want to face a similar issue for our next implemention and am wondering what the best solution to this problem would be. Going Smartforms? Would that help?