Hi Rodrigo,
I had a chat with Pat Vachon about this issue and he suggested CSS could help here.
Following Pat’s train of thought, messages are displayed in a .nx-message DOM node and added to a .nx-messages DOM container. So you could hide the container until the save returns, inspect the messages & remove the dup value messages, then unhide the container. Seems sort of hackish but could work if there it is no better way.
Check out this tutorial for more details
http://help.skuidify.com/m/11720/l/205332-skuid-ui-editor
Regards,
Irvin
