SAP Lumira Discovery 2.1- Check Username and Password on refresh

Hi Experts.

I have created a document using lumira discovery 2.1 via HANA Import using Managed connection.

The document refresh successfully when refreshed through discovery.

But after publishing it to launchpad and refreshing the document from launchpad it gives error "check username and password" although it do not prompt for any username.

Also on scheduling the same document it throws the error "Dataset refresh has failed"

The managed connection created has the setting to use the predefined username password.

Please suggest.

Thanks in advance.

Regards,

Rishabh