Hi,
There could be several reasons:
<b>1st Instance</b>
1. You are having 15 tables from which you need to retrieve data
2. Process/filter the data
3. Display the same.
This entire process takes more execution time & used to dump with "Exceeded run time limit". You had tough time to increase the performance of the program, so that it is executed in foreground.
<b>2nd Instance</b>
1. You had to add 4 new fields in standard sap program MC.C
2. You copied the program of MC.C & added the new fields.
3. Since its a huge program, it was a difficult task to identify the exact locations whether the data needs to be retireved & populated.
4. More importantly you had to take extra precaution to ensure that you need not touch or affect the existing logic which is working fine
Best regards,
Prashant
