how to prevent string truncation in ETL ?

Forum,

I have a issue with the string truncation happening during the ETL process, in that, one of the columns in the flat file is longer than the SQL table column that it's mapped to, how do I abort the process if this were to happen ?

for eg, say one of the columns in the flat file has 6 characters while the mapped SQL table column is only a varchar(4), I want to abort/notify(ed) when this job is run, does BODS supports these type of error handling, try/catch does not interpret this as an error and it simply truncates the string to 4 characters and updates the table.

any help here ?

Shashi