We have multisite setup on Sitecore, example
My expectation that a user visiting
www.MainsiteA.com then visits
book.MainsiteA.com would have the same contact id, Same for
The issue we are seeing that one of the external sites does not create sc_ext_contact cookie that holds the contact id of the visitor, while the other site is creating that cookie fine.
We need this cookie as we are collecting information about the user on the external sites and we need to merge that into the same contact in xDB at later stage, we would use the contact Id stored in the sc_ext_contact cookie.
Would there be any restrictions that could prevent FXM from creating the Cookie on the external site?