Add Relationship in Campaign: only the option “one to one” is available

I’m tring to create a new relationship in Campaign, using Studio, but it showes just “one to one” type as possible.
I’m using 7.11 version.
Any help?

I don’t know, but the first question that comes to mind is: what is the other module you’re trying to relate here?

In this case, Campaign x Alugueis (A kind of Sales, a custom module). But it doesn’t show other option than “one to one”, even in any other modules.

There is an old case that seems to be similar: https://community.suitecrm.com/t/campaign-and-documents-one-to-many-or-many-to-many-relationship

Have you tried in Studio, creating the relationship, starting from the other module? So, if before you tried from Campaigns, now try from the custom module, and vice-versa.

Campaign is One and Has Many Alugueis (like opportunities, a campaign has many opportunities). It’s impossible create this relationship from the custom module (Alugueis/Opportunities). When I open the Add Relationship view, in Campaign Studio Module, the option is only, just only, “One to one”, even for standard modules. The bug is: I can’t create any relationship in Camapaign other than “One to One”.

I asked around the Developer Team but nobody was aware of this limitation. I suggest you open a new GitHub issue for this (after searching to ensure it doesn’t already exist)

Thanks