Mailchimp Integration Not Working

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    Ashleigh Bamford

    Hi there,
    I am having issues with my mailchimp integration. I am getting this message in the logs sometimes:

    Message: Failed to update customer subscription details in MailChimp. API response: “400: Your merge fields were invalid. Please enter a value (NAME). Please enter a value (PCODE).”

    It also seems that when guests are selecting to be signed up to the mailing list they are being added into mailchimp as a contact only, not a subscriber. How can I fix this?


    Andre Flores

    Hello Ashleigh,

    Usually the error occurs when there are some fields set up as required in your Mailchimp list settings, however not included in the subscription form. You may check what causes the issue by following directions from this article.
    As for the second issue, it might be related to the first one, kindly check this article with some possible reasons the issue occurs.


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