different username but same email

Firstly, thanks for the plugin.

I would like to know if there’s a way to hook into Wprus_Api_Create and Wprus_Api_Update classes, just when is failed. I would want to detect the cases logged as…

Alert – Create action failed – “Sorry, that email address is already used!” for user UUUUUU from WWWWWW

We have users in the remote site with different username but same email, and we would want to give them a personalized solution.

Thanks in advance.
Dani.