I have got a bit confusing about the contact information in Ax 2012. For vendors and customers I can create contact information in the tab contact in the customers and vendors forms.
But I also can create contacts as entities itself in the contactperson table throught the button Contacts in the vendor and customer form. In this case I can create several contacts per vendor, with their own contact info data and which are on the global address book and could be used or other customers, vendors or whatever.
Where is your way to work with the contact information for customers and vendors. Do you write the information on both places or only in one of them. It is quite easy to get confused and introduce redundant information I think.