Only one valid authentication should be used for - error

[FergusN]

Hi 

I am trying to connect from a data flow in Data Factory to an Azure SQL Database Managed instance using SQL authentication and get the following error message 

"Only one valid authentication should be used for " + Connection name

"SQLAuthentication is invalid"

"One of user/password is missing" 

The same connection however works for a copy activity.  

I need to use the data flow so I can write to a delta format file in the Gen2 storage. This option is not available in the copy activity

Thanks  

[miguel]

Hi!

Could you use the Manage connections (Preview) - Power Query | Microsoft Learn feature to check if there are other connections in use for your dataflow? if there are any, you could remove that and then establish a new connection to your source.

There might a situation where the credentials passed might not be the correct ones, but if you keep encountering issues trying to connect to your source I'd suggest opening a supprot ticket so an engineer can take a deeper look and help you troubleshoot. Below is the link to create a new support ticket:

https://support.fabric.microsoft.com/support