GetParameterHistory (smaws-clients.Smaws_Client

val request : 
  Smaws_Lib.Context.t ->
  get_parameter_history_request ->
  (get_parameter_history_result,
    [> Smaws_Lib.Protocols.AwsJson.error
    | `InternalServerError of internal_server_error
    | `InvalidKeyId of invalid_key_id
    | `InvalidNextToken of invalid_next_token
    | `ParameterNotFound of parameter_not_found ])
    Stdlib.result

Retrieves the history of all changes to a parameter.

If you change the KMS key alias for the KMS key used to encrypt a parameter, then you must also update the key alias the parameter uses to reference KMS. Otherwise, GetParameterHistory retrieves whatever the original key alias was referencing.