There is a very nice article at Mazak titled:
As the post starts off:
"MTConnect® can help you significantly boost manufacturing efficiency and
productivity by enabling your manufacturing equipment to provide
valuable data in a format that is useable by data management
applications. However, as with any computer-based system, issues such as
missing or erroneous inputs and commands can arise and negatively
affect system performance. Fortunately, MTConnect implementation issues
are generally easy to recognize and resolve. Here are 11 of the most
common:"
From here it lists the 11 common issues for MTConnect.