So I'm developing a project that has to make use of two different REST API apps. In my internal data structure, I have a 'paypal-id' (e.g. P-6YA672828E76572XXXXXXXXX) that links my internal data object (e.g. subscription (meta-)details) to the ID used in the Paypal API. Now, when I receive a webhook, for example, I retrieve my internal data object by searching for a record with a matching 'paypal-id'. Obviously, if paypal's ID system is only unique withi one application, this could cause an issue since two different subscriptions (on my internal data level), registered with different paypal REST API apps, could have the same 'paypal-id', and thus break my project. I hope I didn't make this question overly complex, but I hope the answer is an easy "yes ID's are unique across apps" 🙂 Thanks! Michael
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