Thanks for your response.
However, I'm not sure why do we need a second (duplicate) ruleset for background mode.
Cannot we implement this check in ABAP method level?
(i.e. when being called in background mode, ABAP method will exit immediatly. The BRFplus expression wouldn't handle/ignore it).
I thought on encapsulating the input context with a simple formula expression (If initial call 'Call procedure' expression) for this purpose.
Regarding it, I wonder about the technical implementation of decision tables: When are the condition columns (based on expressions) being evaluated? Already during decision table initialization or only when value is required (on the first cell with assigned value)?
Regards,
Shai