const dealIds = [];

let lastSeenId = 0;
let loadedActivities = undefined;
do {
  loadedActivities = bx24.callMethod('crm.activity.list',
  	{ 
        start: -1,
        order: {'ID': 'ASC'},
        filter:
        { 
          "OWNER_TYPE_ID": 2, // сделка
          "COMPLETED": "N",
          '>ID': lastSeenId
        },
        select:[ "ID", "OWNER_ID" ]
    }
  )
  console.log(`Загружены ${loadedActivities.length} незавершенных дел`);
  
  if (loadedActivities.length > 0) {
    dealIds.push(
      ...loadedActivities.map((element) => parseInt(element.OWNER_ID))
    );
    lastSeenId = loadedActivities[loadedActivities.length - 1].ID;
  }
} while (loadedActivities.length == 50);

;

return {
  "dealIds": [...new Set(dealIds)] // берем из dealIds только уникальные значения
};