Diagnosis
The system was unable to reach a unique check result for the specified
parameter / operator combination.

System Response
The system check configuration (DB17) for this parameter is probablynot
unique.
Example: Incorrect parameter configuration (DB17)
Parameter: DIAGLEVEL
Operator: ==
Green value: 3
Yellow value: 4
Red value: -
The current value of parameter 'DIAGLEVEL': 2
Result: When checking the parameter, the system is unable to specify a
unique result (green, yellow, red).

Procedure
In principle you should try to make the value / operator selection
unique.
In this example:
With the knowledge that parameter 'DIAGLEVEL' may have a value between0 and 4 (inclusive), you can specify a list of red values.
Green value: 3
Yellow value: 4
Red value: 0;1;2