That's just the internal code for an unassigned gate. The field in the database if you were looking at the terminal screen only allows for 4 characters in the gate field.

I'm sure its another one of those "minor" bugs that will be worked out soon. Most jargony language like that is translated into plain English for customer facing stuff. Examples:

NOOP = Cancelled
DCSN = Pending (used to just say 'Delayed' with no time)

Its just another one of those little details that keeps this system integration from being flawless, but will likely be addressed in time.