From the below you can see the next hop for 192.168.0.0 network is 10.0.0.2 which is outsite of 65000 AS, and router jazz doesn’t have a route to it. BGP will not put 192.168.0.0 into routing table because it doesn’t know how to reach next hop, you can see this below:
By adding the next-hop-self command on the router owen it will change the next-hop attribute for external networks that will be advertised to the router Jazz:
owen(config-router)#neighbour 10.0.1.2 next-hop-self
This changes the next hop attribute from 10.0.0.2 to be 10.0.1.1 on the router owen
from Jazz you can now ping (192.168.0.1) on Jules.