DRC Error: Package to Room Spacing

Hi everybody,

I am designing my PCB (OrCAD 16.6). When I place parts of a room I see below message:

Class:           DRC ERROR CLASS
  Subclass:        PACKAGE_BOTTOM
  Origin xy:       (1068.00 178.00)
  Constraint:      Package to Room Spacing
  Constraint Set:  NONE
  Constraint Type: DESIGN

  Constraint value: 0 MIL
  Actual value:     65 MIL

  - - - - - - - - - - - - - - - - - - - -
  Element type:    SHAPE
  Class:           PACKAGE GEOMETRY
  Subclass:        PLACE_BOUND_BOTTOM
  RefDes:          R19
  Room:            FW_PW_ADC


  - - - - - - - - - - - - - - - - - - - -
  Element type:    RECTANGLE
  Class:           BOARD GEOMETRY
  Subclass:        BOTH_ROOMS

  Room:            not named
  Room type:       HARD

               
      xy-lower          xy-upper
  Rectangle Top:    (1208.00 61.00)(93.00 61.00)
  Rectangle Bottom: (1208.00 585.00)(93.00 585.00)

  Height: 524.00 mils
  Width:  1115.00 mils
  Area:   0.584  (sq in)

I tried to find and fix it in CM (Constraint Manager). However, I only saw it in the DRC -> Spacing section which is Read-Only and doesn't change. Does anybody know how I can fix this issue?

Thanks in advance,

Hossein