Differential pressure smaller than required differential pressure

In the following cases the differential pressure is smaller than the required differential pressure for the pilot valve!

This message appears with self-operated regulators if the differential pressure is smaller across the entire valve than the required differential pressure for the pilot valve.

The principle of operation of self-operated regulators (Direct/Pilot valve) is indicated on the Valve data part 1 tab for self-operated regulators.

The required differential pressure for the pilot valve (dp req.) is also indicated on the Valve data part 1 tab for self-operated regulators.