How to do it...

For making the above adjustments, proceed as follows:

How it works...

We already had the reference to the entire set of ALV columns within the variable mycolumns. For each of the two columns, PERNR and BET01, the single column object reference was required. This was done through usage of the get_column method. Methods set_key and set_zero were then called and appropriate values passed for parameters (if necessary) for setting the key column and removal of zeros respectively.

Any exception raised due to wrong name supplied to the get_column method is caught using the TRY .. ENDTRY and CATCH statements. The exception that was addressed was CX_SALV_NOT_FOUND. We can add a suitable MESSAGE statement after the catch statement to output a message in case an error arises, which is not been shown in the previous screenshot:

Note the change in the PersNo. and the Amount column.

See also