yeah

error trapping is pretty essential in some cases depending on the business requirement.for components like reformat join etc we can trap records which are not satisfying the respective rules at reject ports and corresponding error messages can be taken at error port ie for n number of rejected records we get n error messages.

for this we have to abend the graph forcefully by making the reject threshold parameter to never abort and using force_error() function in transform function

hope this helps u

mukund