Is it possible to add the functionality to the Sana site, that the cust_ids claim can be returned as a string with several cust_ids, instead of a collection type?
In Azure B2C directory it is not possible to create a custom collection type. We would have to create a Custom policy that breaks up the string and transform the contents into several attributes / claims then add it to a collection claim during runtime.
That is a lot just to achieve the one to many relation for a shop account to customer ids.
I was thinking that if a string has a certain format, then Sana could read it as a collection instead.