ALV Tips – Remove leading zero
Business user always request to remove leading zero in the field. There are several methods to do it. But I think below one is the easiest.
When define the field catalog, we set field no_zero with value ‘X’. The ALV runtime will automatic remove the leading zero.

The other method is that when build the output table, we can call function module named ‘CONVERSION_EXIT_ALPHA_OUTPUT’ or using statement like below:
SHIFT GS_OUTPUT-VBELN LEFT DELETING LEADING ‘0′.