While deploying a virtual machine blueprint, an administrator encounters the following error: Error: com.vmware.xenon.common.LocalizableValidationException: Unable to find a valid subnet for network…

While deploying a virtual machine blueprint, an administrator encounters the following error:

Error: com.vmware.xenon.common.LocalizableValidationException: Unable to find a valid subnet for network 'Network_External' of type 'EXISTING' with constraints '[dc:metro, tier:1]', reasons:

[Network profile 'publicnet /Metro' was skipped because [Network [Network_External] allocation:

cannot allocate a network with static IP ranges for profile 'publicnet /Metro'.]] Where should the administrator start to troubleshoot?