What this error normally refers to is the field in the Terminal Unit Equipment Inspected section which states ‘Identify Cooling Plant Serving Terminal Unit’.  This field needs to exactly match what was entered in the Cooling Plant Equipment Inspected field ‘Unit Identifier’.

 

So if the Cooling Plant Unit Identifier has been added as VOL001/SYS001/PS001 then this has to entered exactly the same in the Identify Cooling Plant Serving Terminal Unit field.  If these do not exactly match then an error message will appear