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Mailchimp - Your merge fields were invalid - Please enter a value

Jonas Rasschaert

You are receiving this error because:

  1. You altered the default MailChimp fields.
  2. The fiels has been set as required in MailChimp but doesn't have a value.

1. Altering default Mailchimp fields

You have the ability to rename default fields directly in MailChimp.

Combined Shape

These default fields will no longer sync/update after altering the correlating tags in Mailchimp. 


The PieSync Health dashboard shows the following error when the NAME fields have been altered:

Screen Shot 2020-04-28 at 11.56.10


You can fix this by changing your fields back to the default setting:

  • Go to your audience- Click on "View Contacts" > "Settings", and select "audience fields and *|MERGE|* tags" from the dropdown menu- In the column "Put this tag in your content:" change the tag back to the default values.

Annotation on 2020-04-28 at 11-23-09

Change the first name field to FNAME and the last name field to LNAME (these are the default values)

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Don't forget to delete your current connection and create it again.

2. Required MailChimp fields

MailChimp allows you to set certain fields are required. When our sync tries to create/update a contact without a value for a required field, it will return an error. You can solve this by:

A) no longer making the field required in Mailchimp. B) Assure that the contact in the other app has a value for this field and that field is part of the PieSync mappings.

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