object event.acknowledge(object/array parameters)
This method allows to update events. Following update actions can be performed:
Only trigger events can be updated.
       Only problem events can be updated.
       Read/Write rights for trigger are required to close the event or to change event's severity.
       To close event, it should be allowed in trigger.
(object/array) Parameters containing the IDs of the events and update operations that should be performed.
| Parameter | Type | Description | 
|---|---|---|
| eventids (required) | string/object | IDs of the events to acknowledge. | 
| action (required) | integer | Event update action(s). This is bitmask field, any combination of values are acceptable. Possible values: 1 - close problem; 2 - acknowledge event; 4 - add message; 8 - change severity. | 
| message | string | Text of the message. Required, if action contains 'add message' flag. | 
| severity | integer | New severity for events. Required, if action contains 'change severity' flag. Possible values: 0 - not classified; 1 - information; 2 - warning; 3 - average; 4 - high; 5 - disaster. | 
(object) Returns an object containing the IDs of the updated events under the eventids property.
Acknowledge a single event and leave a message.
Request:
{
           "jsonrpc": "2.0",
           "method": "event.acknowledge",
           "params": {
               "eventids": "20427",
               "action": 6,
               "message": "Problem resolved."
           },
           "auth": "038e1d7b1735c6a5436ee9eae095879e",
           "id": 1
       }Response:
Change multiple event's severity and leave a message.
Request:
{
           "jsonrpc": "2.0",
           "method": "event.acknowledge",
           "params": {
               "eventids": ["20427", "20428"],
               "action": 12,
               "message": "Maintenance required to fix it.",
               "severity": 4
           },
           "auth": "038e1d7b1735c6a5436ee9eae095879e",
           "id": 1
       }Response:
CEvent::acknowledge() in frontends/php/include/classes/api/services/CEvent.php.