baby, come back green

[C.Al94]

hello to everyone first of all I apologize if maybe I chose the wrong section of the forum but I couldn't well frame my question. Perhaps it will be a trivial mistake, but I can't come to terms with it. Why on revit when I insert a default door 80 x 210 cm in a generic 30 cm wall brings me a central green line that "connects" the two ends of the wall?
thanks in advance for the answers

 

[Tristan]

is it not that you have entered or connected a dwg?

 

[C.Al94]

is this me beautiful? no dwg connected in practice between the two ends of the wall that the door goes to cut out a thin green line that besides does not make me select but "be part" of the door?

 

[Tristan]

then it is a problem of the family of the door. edit and hide or delete that line

 

[C.Al94]

the beauty that in other walls does not do it while in that you do not really know why I will try to replace the wall...