customer exit for hirarchy node
I have one hierarchy info object called 0cat_id(in this i have cat1,cat2,cat3) in that 0schema is compounding key.
data like 'A' is main node. 'A' have 'B' &'C'& 'D' subnodes, each sub node have child nodes like bellow,
B | C | D ---> CAT1
E F G | H I J | K L -
M N | O | ->>>> CAT3
My requirement when i select schema A in the schema variable. i want to see only B,C,D values in cat1 variable search help,when i choose B in cat 1 search help i want to see only E,F,G in cat 2 variable search list .when i select E in search list i want to see M,N values in cat 3 search help.
for this what is the code for customer exit and how many zvar's i need to create.
its same like geo graphic
when i select ASIA-> i want to see only asia country in country variable-> when i select india i want to see india regions in region variable
thanks in advance.