up2date 업데이터중 에러...

시스템을 등록하는 도중 문제가 발생했습니다:

Error Class Code: 70
Error Class Info: 
     All available subscriptions for the requested channel have been exhausted.
     Please contact a Red Hat Network Sales associate.
Explanation: 
     An error has occurred while processing your request. If this problem
     persists please enter a bug report at bugzilla.redhat.com.
     If you choose to submit the bug report, please be sure to include
     details of what you were trying to do when this error occurred and
     details on how to reproduce this problem.

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업데이터 중에 이런 메세지가 뜨는데 어떠해야 하죠

자세히좀 알려주세요.. 혹시 라이센스 문제 때문인지...