AD certificate on Forti-authenticator having 2 authenticator and 2 AD at 2 different location

[Farooque]

I have 2 Active directory servers at 2 different locations my Forti-authenticator sync with this AD using LDAPs where i have imported certificate extracted from AD however need to confirm as my both AD sync but are in different location an my authenticator is also in these 2 different location so should i extract the certificate from both AD 

[AEK]

It should be the same certificate authority.

Try connect your FAC to the 2nd AD with the same CA cert to confirm.