subscription-manager command throwing "HTTP error (400 - Bad Request): System name cannot contain most special characters."

Solution Verified - Updated -

Issue

  • subscription-manager command error throwing below error:-
# subscription-manager register
Registering to: subscription.rhsm.redhat.com:443/subscription
HTTP error (400 - Bad Request): System name cannot contain most special characters.

Environment

  • Red Hat Enterprise Linux 6
  • Red Hat Enterprise Linux 7
  • Red Hat Enterprise Linux 8
  • Red Hat Enterprise Linux 9
  • Red Hat Subscription Management

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