I've always managed all of my DocuSign for Salesforce settings over on the DocuSign side under "Connect". I started looking at the Custom Tags section in Salesforce and I selected one of my mapped fields that pushes data from a DocuSign document into Salesforce. When selecting this field under CustomTags, I see the following error in a red bar above the page: Error: No content to map to Object due to end of input
Everything is currently working correctly. So what is this error?