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AUTH_CUSTOM_USER_ID_HAS_BEEN_BOUND

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Error Cause​

CustomUserId is already associated with account, this custom user ID has been bound to another account.

Solution​

  1. Use a different CustomUserId
  2. Check if the same user ID already exists
  3. If it's the same user, directly login with the bound account
  4. Unbind existing association and rebind (if you have permission)
  5. Contact administrator to handle account binding issue