I'm looking for help with creating a mapping in a Common Resource. The Common Resource maps the Opportunity table in an instance of Sugar adapter to the Opportunity table in an instance of ServiceNow adapter. The first thing I did was to create the required fields at Organization level in the Common Resource. Then I mapped them to the fields in the Sugar instance. This worked with no problems. Then, I started mapping the ServiceNow instance. I added the Opportunity resource to the adapter manually because the adapter did not have it. Then, I added the ServiceNow mapping to the Common Resource. As soon as I added the mapping, I got an error message "Failed to retrieve object metadata". When trying to fill in the ServiceNow field names, the names would not auto-complete. The names did auto-complete when I was creating the Sugar mapping in the same Common Resource. This led me to think that the lack of auto-completion must be relation to the error message. What are the possible causes of this error?