| StorageClass | String | Required: Yes. The storage class to which you want the object to transition, such as                      GLACIER. For valid values, see the StorageClass                   request element of the PUT                      Bucket lifecycle action in the                   Amazon Simple Storage Service API Reference. | 
    
        
            
                | TransitionDate | String | Required: Conditional. Indicates when objects are transitioned to the specified storage class. The                   date value must be in ISO 8601 format. The time is always midnight UTC. | 
    
        
            
                | TransitionInDays | Number | Required: Conditional. Indicates the number of days after creation when objects are transitioned to                   the specified storage class. |