Create Instances Using Group Manager

{
	"clientOperationId": "[Output Only] The value of `requestId` if you provided it in the request. Not present otherwise.",
	"creationTimestamp": "[Deprecated] This field is deprecated.",
	"description": "[Output Only] A textual description of the operation, which is set when the operation is created.",
	"endTime": "[Output Only] The time that this operation was completed. This value is in RFC3339 text format.",
	"error": {
		"errors": [
			{
				"code": "[Output Only] The error type identifier for this error.",
				"location": "[Output Only] Indicates the field in the request that caused the error. This property is optional.",
				"message": "[Output Only] An optional, human-readable error message."
			}
		]
	},
	"httpErrorMessage": "[Output Only] If the operation fails, this field contains the HTTP error message that was returned, such as `NOT FOUND`.",
	"httpErrorStatusCode": 0,
	"id": "[Output Only] The unique identifier for the operation. This identifier is defined by the server.",
	"insertTime": "[Output Only] The time that this operation was requested. This value is in RFC3339 text format.",
	"kind": "compute#operation",
	"name": "[Output Only] Name of the operation.",
	"operationGroupId": "[Output Only] An ID that represents a group of operations, such as when a group of operations results from a `bulkInsert` API request.",
	"operationType": "[Output Only] The type of operation, such as `insert`, `update`, or `delete`, and so on.",
	"progress": 0,
	"region": "[Output Only] The URL of the region where the operation resides. Only applicable when performing regional operations.",
	"selfLink": "[Output Only] Server-defined URL for the resource.",
	"startTime": "[Output Only] The time that this operation was started by the server. This value is in RFC3339 text format.",
	"status": "[Output Only] The status of the operation, which can be one of the following: `PENDING`, `RUNNING`, or `DONE`.",
	"statusMessage": "[Output Only] An optional textual description of the current status of the operation.",
	"targetId": "[Output Only] The unique target ID, which identifies a specific incarnation of the target resource.",
	"targetLink": "[Output Only] The URL of the resource that the operation modifies. For operations related to creating a snapshot, this points to the persistent disk that the snapshot was created from.",
	"user": "[Output Only] User who requested the operation, for example: `user@example.com`.",
	"warnings": [
		{
			"code": "[Output Only] A warning code, if applicable. For example, Compute Engine returns NO_RESULTS_ON_PAGE if there are no results in the response.",
			"data": [
				{
					"key": "[Output Only] A key that provides more detail on the warning being returned. For example, for warnings where there are no results in a list request for a particular zone, this key might be scope and the key value might be the zone name. Other examples might be a key indicating a deprecated resource and a suggested replacement, or a warning about invalid network settings (for example, if an instance attempts to perform IP forwarding but is not enabled for IP forwarding).",
					"value": "[Output Only] A warning data value corresponding to the key."
				}
			],
			"message": "[Output Only] A human-readable description of the warning code."
		}
	],
	"zone": "[Output Only] The URL of the zone where the operation resides. Only applicable when performing per-zone operations."
}