This API enables you to query the rotation status of a CMK.

**Table 1** URI parameter
Parameter	Mandatory	Type	Description
project_id	Yes	String	Project ID

**Table 2** Request header parameters
Parameter	Mandatory	Type	Description
X-Auth-Token	Yes	String	User token. It can be obtained by calling an IAM API. The value of X-Subject-Token in the response header is the user token.
Content-Type	Yes	String	application/json

**Table 3** Request parameters
Parameter	Mandatory	Type	Description
key_id	Yes	String	36-byte key ID that matches the regular expression ^[0-9a-z]{8}-[0-9a-z]{4}-[0-9a-z]{4}-[0-9a-z]{4}-[0-9a-z]{12}$. For example, 0d0466b0-e727-4d9c-b35d-f84bb474a37f
sequence	No	String	A 36-byte serial number of a request message. For example, 919c82d4-8046-4722-9094-35c3c6524cff

**Table 4** Response parameters
Parameter	Mandatory	Type	Description
key_rotation_enabled	Yes	String	Key rotation status. The default value is false, indicating that key rotation is disabled.
rotation_interval	Yes	Integer	Rotation interval. The value is an integer ranging from 30 to 365. Set the interval based on how often a CMK is used. If it is frequently used, set a short interval; otherwise, set a long one.
last_rotation_time	Yes	String	Last key rotation time. The value is a timestamp expressed in the number of seconds since 00:00:00 UTC on January 1, 1970.
number_of_rotations	Yes	String	Number of key rotations

Example request

{
    "key_id": "0d0466b0-e727-4d9c-b35d-f84bb474a37f"
}

Example response

{
    "key_rotation_enabled": true,
    "rotation_interval": 30,
    "last_rotation_time": "1501578672000",
    "number_of_rotations": 3
}

or

{
    "error": {
        "error_code": "KMS.XXXX",
        "error_msg": "XXX"
    }
}

Table 5 lists the normal status code returned by the response.

**Table 5** Status codes
Status Code	Status	Description
200	OK	Request processed successfully.

Exception status code. For details, see Status Codes.

Querying the Rotation Status of a CMK