After discussing a recent support ticket with Intuit staff, we found that neither the OAuthException nor the FMSException include the Intuit TID. These would be very helpful in the Intuit QBO API SDK in order for us to provide that context to the support staff when debugging issues with particular failed API calls. I'd like to make a feature request to have that value included on these (and perhaps other?) exception classes to facilitate debugging.
Please let me know if I can provide any other information to make this feature request more precise or useful for you.