Stuck in GTM and LTM setup

Hi,

i have two pairs of BIG-IP appliances , one pair at DC and one at DR. in same appliance i am running LTM and GTM both. i have configured LTM and GTM on one side now i have one query;

1. in case sync GTM config to standby appliance at DC, need sync on,LTM must be synched,Device group0s must be there with proper config and bigip_add on same box to communicate LTM with GTM. is something wrong here? because not able to sync the GSLB related objects from active appliance to standby appliance.

any Help is appreciated .