TRY CATCH and Exception Handling Basics

Explanation

Exception handling prevents technical failures from becoming uncontrolled short dumps. Modern ABAP uses class-based exceptions with TRY, CATCH and CLEANUP. Exceptions are useful when an operation can fail, such as conversion, object creation, file processing, API calls or dynamic access. Good exception handling does not mean hiding every error. It means catching expected failures, logging meaningful information and giving users a clear message. In production support, proper exception handling makes errors easier to analyze.

Code example

TRY.    DATA(lv_amount) = CONV wrbtr( lv_amount_text ).  CATCH cx_sy_conversion_no_number INTO DATA(lx_conv).    APPEND VALUE #( type = 'E'                    message = 'Invalid amount format' ) TO lt_return.ENDTRY.

Real project scenario

An interface receives amount values as text. Some records contain invalid numeric values. Instead of short dumping during conversion, the program catches the conversion exception and stores a row-level error message.

Common mistakes

- Catching all exceptions and doing nothing. - Showing raw exception text to business users. - Not logging technical details for support. - Using TRY CATCH where simple validation would be better.

Best practices

- Catch specific exceptions where possible. - Log technical details safely. - Show user-friendly messages. - Do not suppress errors silently.

Interview angle

A good answer should explain expected vs unexpected exceptions, user message and technical log.