HCX Interconnect (IX) appliance deployment fails on adding Mobility Agent task.
HCX → Interconnect →Tasks
HCX Manager app.log
A general system error occurred: internal error Failed to configure the VIM account on the host: Fault cause: vim.fault.InvalidName
HCX IX mobilityagent.log
Failed to read advanced option subtree Security.PasswordQualityControl: N3Vim5Fault11InvalidName9ExceptionE(Fault cause: vim.fault.InvalidName
Or
Failed to read advanced option subtree Misc.MaximumHardwareVersion: N3Vim5Fault11InvalidName9ExceptionE(Fault cause: vim.fault.InvalidName
VCF 9.0
VMware HCX
Please note that HCX versions earlier than 9.0 are not supported with vCenter 9.0 within the same HCX site. For example, HCX 4.11.x must not be paired or connected to a vCenter 9.x instance at the same site.
For additional details, please refer to the Product Interoperability Matrix.
Ensure that HCX is upgraded to version 9.x.