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  • Thanks for the info everyone, good stuff here.

    As @elliot mentioned, the key can be any (reasonable) string starting with field_

    So while you could manually generate IDs with uniqid(), it might make more sense to use something that has meaning and you know is unique. Like maybe field_book_author or field_user_message_body where the first part might relate to the object type this is attached to.

    do you see any possible issue with this? Presuming it isn’t too difficult to make those key names unique.

    Just a thought 🙂