Another recursion question

Hello,

I'd need a solution to following configuration requirement. I have one Policy-attribute only with an LRT and there're two routes under a single route entry.

Route1: SAG1     //SAG1=SA1, SA2/round robin

Route2: SAG2     //SAG2=SA3, SA4/round robin

I'd need to select an SA from SAG1 and it if selected SA rejects a call, I'd need to go to SAG2 and select an SA from SAG2.

It just doesnt work. What I can configure:

1. SA is selected and if error arrives, it is sent back (no recursion at all)

2. SA is selected and if error arrives the other SA within the SAG is contacted. If error arrives again, it is sent back (SAG recursion)