Hi Wilsonjr,
I’ve tested the connection from one Datamarts to another Datamarts and there is no issue on connection. But in my scenario, I don’t configure MFA and the data amount is not so large.
Consider the usage of MFA and the large data amount, I would suggest you try these steps.
1 Make sure the connection info is correct
Server name is the Server connection String you copy from the upstream Datamarts Settings page
Database is the name of the upstream Datamarts
Authentication account is who creates the upstream Datamarts
2 Prolong the timeout as long as it is less than 2 hours which is the maximum
3 connect with the help of Gateway
Please register the data source to your gateway firstly and then recreate your new Datamarts with this configured gateway
Best Regards,
Community Support Team _ Caiyun