When trying to sync my store details with that of Salesforce, I receive an error message, “Authentication error or please check Shopify self-signed certificate’.

If you enter incorrect credentials, such as your API Store URL, API Key, or Access Token in Step 2 of the Salesforce Shopify Sync Settings webpage, you’ll encounter this error message.

Please note that you can put anything on the Label but the API name should be Shopify. You can delete any old expired certificate with an API name Shopify, if any.