I am having the same issue. But MohSwellam’s explaination does not work for me. I know for a fact that the email addresses don’t already exist, because I am making them up to test the webhook. When I test the zap while in my Zapier account, it works. It creates the contact. But when I put the webhook on my PluginOps landing page that’s when I get the above mentioned error message. It doesn’t make sense.
Best answer by Danvers
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