{
 "DayAheadConstraints": {
  "DayAheadConstraint": [
   {
    "ConstraintName": "MIS",
    "ContingencyName": "Interface",
    "MarginalValue": -8.69,
    "BeginDate": "2026-07-27T17:00:00.000-04:00",
    "InterfaceFlag": "Y"
   }
  ]
 }
}