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Error 400 : Your merge fields were invalid

01 Nov 2017 05:44:36 ERROR Error for the record:, message: Your merge fields were invalid.[{field=JOBTITLE, message=Please enter a value}], code: 400

*Sample error only

The error above occurs when the required field in your CRM is blank when synced to Mailchimp.

How to overcome this issue?




Option 1: Fill in the required field in CRM then Reset Sync Process and Resync.

Option 2: Make the field as "not required" in CRM so that the error will not appear in Mailchimp.

Option 3: In some cases, the errored field in Mailchimp might be required so you will also need to map that field in Step 4 of the Sync Profile so that the error will be fixed. Save, Reset Sync Process and resync.

Side note:

For any boolean/checkbox field type you add in the future just provide both options in the dropdown: true-false, or yes-no in Mailchimp to then map to CRM which will work great.

After updating dropdown values be sure to refresh field mapping so SyncApps knows the values to match.

Another error Code 400 under Mailchimp:

Time Error Message
30 May 2019 17:57:29 Error for record:, message: has signed up to a lot of lists very recently; we're not allowing more signups for now, code: 400

This is a common error that Mailchimp gives you and unfortunately, it is beyond us as to why as it must hit up against their algorithm.

There is no fix on the SyncApps side only a call or email to your MailChimp account support who can fix it.

MailChimp is denying these like (or the stated email addresses) so might ask them and provide a List for them you’re needing to move over or upload via CSV to see if they accept them.

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