If in your report called APP1 you need to save a file in a server folder (ex.: /export/app1/) and you don’t want it to be a selection screen parameter, how do you do it?
The simplest is to create a constant with the folder’s physical name: /export/app1.
But… what if tomorrow someone decides to change the folder location?
To avoid having to change your program in case this happen you can do this:
create a logical folder in AL1 (ex.: DIR_APP1) pointing at the physical folder (ask your system administrators if you don’t have permissions);
store the logical folder name in a program constant;
use the code below to convert the logical folder into the physical folder.
DATA: physical_dir TYPE DIRNAME_AL11. CALL 'C_SAPGPARAM' ID 'NAME' FIELD gc_logical_dir_app1 ID 'VALUE' FIELD physical_dir.
Thank you Nuno Morais for the tip.
Greetings from Abapinho.