It integrates Facebook lead ads and Shopify.Why do I get this error when I'm trying to get new customers?

It integrates Facebook lead ads and Shopify.Why do I get this error when I'm trying to get new customers?
Yep! Thanks
Hi
FB Lead Ads has a testing tool: https://developers.facebook.com/docs/marketing-api/guides/lead-ads/testing-troubleshooting/
Is there a place to fill out the lead form?
I did not know that!
Where do you want it to appear?
Thank you for your reply!
Let me ask you a question.
The test data was set from the beginning.
What should i do?
Removing test@fb.com from shopify?
Hi
it looks like you are using test data. Likely, the test has been pushed through once and their is already a customer in Shopify with the email address test@fb.com. I would try filling out the lead form with another email address and running your tests again.
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