You can call this operation to cancel one or more simulated system events that are in the Scheduled or Executing state. After you cancel a simulated system event, the simulated event enters the Canceled state.


OpenAPI Explorer automatically calculates the signature value. For your convenience, we recommend that you call this operation in OpenAPI Explorer. OpenAPI Explorer dynamically generates the sample code of the operation for different SDKs.

Request parameters

Parameter Type Required Example Description
Action String Yes CancelSimulatedSystemEvents

The operation that you want to perform. Set the value to CancelSimulatedSystemEvents.

EventId.N RepeatList Yes e-xhskHun1256****

The ID of system event N. Valid values of N: 1 to 100. Specify multiple values in the repeated list format.

RegionId String Yes cn-hangzhou

The region ID of the system event. You can call the DescribeRegions operation to query the most recent region list.

Response parameters

Parameter Type Example Description
RequestId String 473469C7-AA6F-4DC5-B3DB-A3DC0DE3C83E

The ID of the request.


Sample requests
&<Common request parameters>

Sample success responses

XML format


JSON format


Error codes

HTTP status code Error code Error message Description
404 MissingParameter %s The error message returned because a required parameter is not specified.
403 InvalidParameter %s The error message returned because a specified parameter is invalid.
403 CannotCancelSystemEvent.NotSimulated %s The error message returned because you cannot cancel a non-simulated system event.
403 InvalidEventId.NotFound %s The error message returned because the specified EventId parameter is invalid.
400 EventIdLimitExceeded %s The error message returned because more than 100 system event IDs are specified.

For a list of error codes, visit the API Error Center.