I am trying to create a Zapier integration template for my Zapier application with MailChimp.
The following error is being thrown by MailChimp:
Invalid Resource - Your merge fields were invalid. BIRTHDAY: Please enter a month (01-12) and a day (01-31).
The value of the merges__BIRTHDAY field is "1983-05-03" which is an ISO 8601 format compliant with Zapier's date field format guidelines.
What went wrong? What is the format I am supposed to be using here?
Per MailChimp's docs they expect a birthday in the format "MM/DD". When they say "Please enter a month (01-12) and a day (01-31)", they mean only those two values; it's the day in the year someone's birthday falls on, not the date of the day they were born.