USING Dial-A -Flap?

So generally, we write our own SOP.Soundls like flap 25, no derate is a good comprimise- and real world for at least one operator.Is there a MEL item related to Dial-a-Flap? That is, somehhing that can render flap 15 availible, but not the full dila-a-flap range (the indicator perhaps?), in order for it to be considered inop.Or is it a matter that anything wrong that would break Dial-a-Flap, would have the flaps broken in general- and a call to SAM.TIA,Tim