You and XXX were working on this at the same time. XXX finished before you did, so your work was not saved.

If you have ever tried Postman for interacting with WebAPI’s, following is a typical issue you would’ve faced. When you try to update a record in Quickbooks sandbox using an Update statement you might’ve come across this Authentication error for the very first time.       “<Message>= Application Authentication failed; errorCode 003200; statusCode=401 </Message>” […]