Every time an action that requires loading time is performed (such as opening a connector or loading a collection) an Animated Loader 
will appear at the bottom of the selected card to indicate the operation is still in progress. After the operation is finished, the DTS UI will display, depending on the operation's success, a message, a warning or an error on the bottom right hand corner of the screen.
message examples
The messages will disappear after a few seconds. If you have multiple operations running at the same time, the messages will stack.
In case of an error, the corresponding card that triggered the operation will be highlighted in red. The Error Button 
will also appear on the card .
Card with error
To view more specific details about an error , click on the error button or simply click on the error message on the bottom right hand corner of the screen when prompted.
A custom pop-up message will appear in the top right hand corner of the screen containing detailed information.
error detaills
To close the message, click on the 
Close Button.
You can use the 
Copy to Clipboard Button to copy the whole error message.