I have 2 apps, passengers and reservations. I need to add passengers to the reservation through a relationship field inside the reservation app. Im using Podio's API for this.
A reservation item should accept multiple passengers in the same field, but when I try to add an Array of passengers IDs that I have already created, I get an error message "Invalid value (array): must be integer". It only accepts one item_id_of_reference.
Is there a way I can add various items IDs to a relationship field through Podio's API? How?
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