Looks like you might be configuring an ike id and not one on the cisco side. Try removing general-ikeid
gateway gw-vpn-customer-u1 {
ike-policy ike-pol-vpn-customer-u1;
address 222.222.222.222;
local-identity inet 111.111.111.111;
external-interface ge-1/0/0.0;
general-ikeid;
version v2-only;