Entity already exists in projection

@AleMota   

There is already an existing reference in the CustomerHandling.projection to the CustomerAddress.  What you’re seeing in the first picture you pasted in is the list of Configurations done inside IFS to add associations to the existing projection.

If you go to the Customer page and invoke the Page Designer, you’ll see that the CustomerInforAddress and CustomerInfoAddressGroup are already available in the ALL ELEMENTS Address Group for the CustomerInfoSet that’s defined in the CustomerHandling.projection

 

I still have a problem that probably comes from this.
So, i have in first place a custom page that has a customer addresses(picture1) and in that page i created two navigation links, one that takes me to a test page that displays info on that customer and address (picture2), i created that test page to validate that the navigation link works. The other page is Customer/AddressInfo (picture3)
 

The problem is that the navigation link from customer addresses to Customer/AddressInfo does not work, it does not display the correct customer/address. I created the test page(picture2) using CustomerInfoAddress entity and the selector does have that entity and DataSource ad CustomerInfoAddressSet but when i tried to replicate that set up on Customer/AddressInfo i cant see to find that DataSoruce, the only one showing is Reference_CustomerInfoAddress.
Thats why i thought in first place to try adding the entity wich was the first question, but now i cant set that datasource.
Is it possible to do that?
Another thing to mention is that when i create the navigation link to the test page i can set the parameter addressId but when i create the one for AddressInfo i can only see the fields of customer, non of the fields of address are shown.

I add the difference between the navigation link for testpage and AddressInfo

Hopefully you can helpe me identifty the problem please.
Thankyou in advance