Difference between various error messages when fetching tickets

Difference between various error messages when fetching tickets

Sometimes I receive a 403 with the message "You are not authorized to access this resource" and other times I receive a 403 with the message "Unauthorized to view ticket" (note the double space there)

I think one case is where the ticket was deleted and the other is where the ticket has been merged? Can the server response message be updated to reflect those error states? such as 410 for resource has been deleted and 301 for merged (if it's possible to route the request to the appropriate new ticket)?