Internal Only
This error only effects Samsung SSP displays that are in a sync group where the ID of that sync group is over 1000.
Identifying the ID of your sync group
Access the network where you are having an issue with sync
Select the Network dropdown box and then select Sync Groups
On the left of the screen select the sync group that you are having the issue with
From the list of players that appears select any player from the sync group
Under the Content and Screen On/Off tab there option to the right to Download Config
This will download a JSON file.
Open the JSON file (a JSON formatter may help read the required information)
In the JSON file there line containing "sync_group_id" followed by a number string which is your sync group ID
If this ID is over 1000 a Trello card will need to be made and handed over to dev to have them manually change the Sync group ID to something under 1000
Here is a link to a video to help you through the process Internal Only