The create refund action is currently in pipeline on the Stripe integration for Zapier and isn't supported as of today. Support at Zapier suggested that I should post a question here to see if someone could point me in the right direction for creating this (if at all possible). Maybe the "Code by Zapier" or "Webhooks by Zapier" integration is a workaround that can be used? https://stripe.com/docs/refunds
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