How to derive values between 2 Type 4 Entity Lists.
I have 2 Type 4 Entities ( Lets say A and B) on the screen as Lists. ( B would appear below A )
Both are in relation to Top Type1 Entity ( Type1 as Leading)
When User selects a line on Entity A, then the following functionality should happen
- New Button should get enabled for List B, when user creates new entry, 1 Key column of ListB should be derived from a Key of List A
- If there are already existing entries in List B for this Corresponding record in List A ( Matching Keys), those records should be fetched and displayed
( Similar to Search functionality)
I tried using BRF+ Derivation, but I donot see a way to access the entries of the List A table, it provides with a Structure - so should be only one entry.