Mailchimp block – “400: Your merge fields were invalid.” if already subscribed

  • Resolved capsid

    (@capsid)


    3 years, 9 months ago

    Hello, I’m using the Mailchimp sign up block via one of the subscription forms in the Template Library. I have the api key installed and the audience is synced successfully. When I fill out the form with a new email everything works as expected. When I fill out the form as a user who is already subscribed to that list it shows the confusing error message “400: Your merge fields were invalid.” Just wanted to suggest that it show an error message like “Already subscribed.” so the user doesn’t think the form integration itself is broken. Great plugin, thanks so much! Please let me know if I can assist with troubleshooting.

Viewing 4 replies - 1 through 4 (of 4 total)
  • Plugin Support dimned

    (@dimned)

    Hi @capsid,
    Could you please navigate to Mailchimp account > Audience > Settings > Audience fields and *|MERGE|* tags and make sure the Birthday field is not selected https://prntscr.com/18qgglh Let me know if it is helpful?

    Thread Starter capsid

    (@capsid)

    Hi Dmytro, I have confirmed that the Birthday field is not selected. https://imgur.com/GdBRI3k

    I still receive the same error when I press Subscribe “400: Your merge fields were invalid.”

    View post on imgur.com

    Standing by if you have more suggestions. Thanks!

    Plugin Support dimned

    (@dimned)

    Hi @capsid,
    Are those all the fields that are captured on the screenshot or there are some other ones that are marked as required?
    Could you please submit a request to our support team to investigate it further?

    Thread Starter capsid

    (@capsid)

    Hi! Yes, the fields in the screenshot are the only ones required. Ok, I’ll file a support ticket. Thanks for your help!

Viewing 4 replies - 1 through 4 (of 4 total)
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