I've been working with Mailchimp support on this but haven't been very helpful.
We currently have Salesforce and the Mailchimp package installed.
There is an error (see below) but can't seem to figure out what the error is as that API Name/Field isn't mapped to anything in the query builder and audiences.
I'm trying to sync our data from Salesforce contacts to MailChimp records.
#Mailchimp #MailChimp Integration #Salesforce_Administration #NPSP
I’ve run into similar issues with the Mailchimp for Salesforce package - those unknown field/API name errors are usually coming from something in the query builder or a hidden mapping, and they’re not always easy to trace. It’s often not Salesforce itself, but the connector being a bit opaque.
If you want to keep using the native package, I’d double-check the query builder, audience fields, and any recently changed fields in Salesforce (especially deleted/renamed ones).
In one project we hit a point where debugging the package took more time than it was worth, and we switched to using Skyvia to sync Contacts to Mailchimp. It gave us explicit control over field mapping and upsert logic, plus clearer logs when something failed. Not a direct fix for the package, but a more predictable alternative if the sync keeps acting up.