Refer to the exhibit.

Change the local group number to 255 or less and request that the remote data center matches the group member in its configuration.

Set the local group number as 300 in the remote data center configuration

Run version 1 and version 2 HSRP on VLAN300 in the local data center.

Reduce the priority of the local HSRP to below 100 to force the local HSRP to standby and then change the version to version 1.