Problem crreatingDCR

HiI am testing how Data connection Resource work.

But It seems to not work, I get the mesage

‘Server error: Realtime service cannot connect to the external system’.

I have a domino-server installed with the task ‘Decs’ on my local Client. I try to connect to a Acces-database that is stored on the local client.

I have enter the path to the external source in the field ‘Data Source’ on the propetiebox for the connection. I donot know what to enter in the field ‘Catalog’.

When I click on the button ‘Browse metadata’ I get the following message '‘Server error: Realtime service cannot connect to the external system’.

What have I foregot, any suggestion.

I appreciate any advise.