Ok, I figured it out.  If you run save_settings windows=yes, you can see that the actual name= parameter adds VC_ to the front of the name.  I was able to change the vcenter server around, but only by deleting it:  unregister_vcenter_server name="VC_10.0.0.47" cluster=rpcluster  Then I added it back in using register_vcenter_server. Even after that, get_vcenter_server_credentials shows the name as "10.0.0.47", and the only way you can figure out the true name is by reading through the output from save_settings.  It would be nice if more of this functionality was exposed within the vSphere Web Client Plugin, and if the CLI was a little more consistent.  Hopefully this post will help someone else.
I just installed RecoverPoint for VMs using the Deployment Manager, which prompts for the IP of the vCenter Server.  In order to get it up and running quick (this is just a demo), I just plugged in my vCenter credentials.  Now I'd like to go back and change them out with a proper service account.  There appears to be no way to accomplish this via the GUI, which is ok, but the command-line doesn't work either (names/IP's have been changed to protect the innocent):  rpcluster> get_vcenter_server_credentials Enter the IP address of the vCenter Server whose credentials you want to display (Default: All vCenter Servers at cluster):   vCenter Servers:   10.0.0.47:     IP address: 10.0.0.47     User name: admin[NAME].test.net     Port: 443     Certificate: YES  rpcluster> update_vcenter_server_registration Enter vCenter Server name: 10.0.0.47 Error: Invalid entry: 10.0.0.47 Enter vCenter Server name: 10.0.0.47 Error: Invalid entry: 10.0..0.47 Type 'help update_vcenter_server_registration' for help with this command. rpcluster> help update_vcenter_server_registration DESCRIPTION:  Updates the registration details for the specified vCenter Server at the specified RPA cluster.  PARAMETER(S):   cluster=    name=    [new_name=<...>]   [new_ip=<...>]   [new_port= ]    [new_user_name=<...>]   [password=<...>]   [new_certificate=<...>]  rpcluster> update_vcenter_server_registration cluster=rpcluster name=10.0.0.47 Error: Invalid 'name' parameter. Type 'help update_vcenter_server_registration' for help with this command.    I have tried all sorts of variations of quoting around the name= parameter, but no matter what, it will not take it.Due to this, the unregister command does not work either.   How can I change the vCenter name and credentials?    My only other thought would be to manually remove the solution, and reinstall it using the boxmgmt interface and not using Deployment Manager.  Thanks in advance!
RecoverPoint for VMs - Change vCenter credentials/name