expirationModel

Specifies whether the key material expires. The default is KEY_MATERIAL_EXPIRES. For help with this choice, see Setting an expiration time in the Key Management Service Developer Guide.

When the value of ExpirationModel is KEY_MATERIAL_EXPIRES, you must specify a value for the ValidTo parameter. When value is KEY_MATERIAL_DOES_NOT_EXPIRE, you must omit the ValidTo parameter.

You cannot change the ExpirationModel or ValidTo values for the current import after the request completes. To change either value, you must reimport the key material.