It's not working yet.
Rocketmap says that it's under test.
Shark
로켓맵
2017.09.07 13:57
Currently, the APIs have not been updated pending some more information from Bossland about a new signature field (UK27) in this API version. We will let you know of any developments as we become aware of them.
Rocketmap says that it's under test.
Shark