Can't Sync Cluster : 010717e1:3: Client SSL profile cannot contain more than one set of same certificate/key type..

Did you edit the config fie in the standby ltm and run a load config.

If the above still dint resolve as per the workaround suggested in the article, you can go with the overwrite method of sync,

Performing ConfigSync using the Configuration utility (11.2.1 and later)

Impact of procedure: Performing the following procedure should not have a negative impact on your system.

• Log in to the Configuration utility.
• Navigate to Device Management > Overview.
• In the Device Groups section, click the name of the device group you want to synchronize.
• In the Devices section, click the name of the device from which you want to perform the synchronization action.
• From the Sync menu, select the appropriate synchronization action.
• If necessary, use the Overwrite option to synchronize from a device with an older configuration to a device, or devices, with a newer configuration.
• Click Sync.