It s impossible to add a CNAME DNS record which includes an underscore symbol, like
Such behavior was classified as the software issue PBAS-30214. It was fixed in OBAS 4.5.6
To resolve the issue, please upgrade to 4.5.6 as described in How to upgrade OBAS system to the latest available version.
Hotfix for 4.5.5
If upgrade is not an option for you, there is a hotfix for 64-bit OBAS 4.5.5. If your OBAS version is older than 4.5.5, please upgrade to 4.5.5 before applying it.
To apply the hotfix.
Install it by running
# rpm -Uvh hspc-domain-manager-4.5.5-41.swsoft.x86_64.rpm # service hspcd restart
hspc-upgrade-manager --finish will cause OBAS downtime for several minutes.