Hi Steve,
Sorry for incomplete info provided from my side. Please find below network topology and configuration details.
1) BGP is configured for SRX340 ISP
2) On SRX240 for ISP1 and ISP2 BGP is configured
3) ISP1 and ISP2(/30 subnet) is part of untrust vrf, static route next hope is untrust vrf, as prepend configured on SRX240
4) If we assigned 192.168.50.1(reth2) and 192.168.50.2(ge-0/0/6) Where i need to configure natting (router or firewall side/interface)
5) Do i need to advertise static route into BGP
6) There is another same setup to the next branch so traffic path will be ... Core switch --> SRX340 --> SRX240 ---> SRX240(other branch location) --> MX5 (Internet router) --> ISP
Thank you...