EntitySync and collisions

[Jacques Le Roux]

Hi,

I wonder now that I have added the possibility to create Party (of type Person only), userLogin and ContactMech from the POS how 
EntitySync deals with possible collisions.
For instance if a client create a login using her/his email from eCommerce webstore but has also been registered as user from a POS 
with same login (email) but a different password, what will happen ?

Thanks

Jacques