With MailChimp you can sometime get the following error when trying to open the properties window in MailChimp, from the business partner window “MailChimp options” button. It can also happen when trying to add subscribers in the Add subscribers window
If you get this error, please contact MailChimp support as they are the only one that can fix this issue: https://mailchimp.com/contact/support/
Here select the "Integration" topic on the site and fill out the shown form.
In the subject field write: “API: calling search-members fails”
In addition, write the following message to them.
We are using a mailchimp integration there fails when we make the following API call
We have heard that this error can happen because of a list indexer issue, and would there like to have our account reindexed to see if that solves the issue.
Attached are a screen shot of the Api call we have made so you can see when the failed call happened and the error message we got.
Here is the first 5 digits of the Api key we are using: #####
Attach the mentioned screenshot please log into your MailChimp account and go to “Account”, “Extra”, “API keys”. Scroll to the bottom if the screen and take a screen shot of the APi calls for the last 24 hours (important that the error is shown in the screenshot).