F5 Device Management Certificate renewal

Hi All,

I need to manually renew F5 (Ver - 17.5.3.4) device Management Certificate, which is getting expired in 30 days. Actually we have auto cert renewal configured via Sectigo/Venafi but looks like auto renewal was not successful. Please share the complete GUI & CLI steps for Device Management Certificate renewal manually.

Also please share troubleshooting steps to figure out why auto renewal got failed from Venafi external CA.