Symptoms:
2021-09-06T06:41:48.109Z nsxsrv001 NSX 5725 FABRIC [nsx@6876 comp="nsx-manager" level="INFO" subcomp="manager"] Updating existing deployment Unit:DeploymentUnit
...
errors={26134=Error creating agency for deployment unit ########-####-####-####-##########. Error occurred in compute manager plugin call. Error while creating agency: Invalid url specified http://host.example.com:8060/public/<path>/<version>.large.ovf. Delete this deployment and create another one.}]
... agentConfigs='[AgentConfigDto{ovfUrl='http://host.example.com:8060/public/<path>/<version>.large.ovf', hostVersion='7+'},
...
level="ERROR" subcomp="cm-inventory"] Error creating agency with deploymentConfig: AgencyConfigDto{agencyId='null', agencyName='_NSXT_########-####-####-####-##########35_domain-c8',
...
com.vmware.nsx.management.cminv.exceptions.HostBasedVMException: Error while creating agency: Invalid url specified http://host.example.com:8060/public/<path>/<version>.large.ovf
...
2021-09-06T06:23:13.417Z ERROR http-nio-127.0.0.1-7443-exec-1 EamServiceImpl 4397 SYSTEM [nsx@6876 comp="nsx-manager" errorCode="MP40428" level="ERROR" subcomp="cm-inventory"] Error connecting EAM on cm ########-####-####-####-##########. Reconnecting.
2021-09-06T06:41:48.101Z ERROR http-nio-127.0.0.1-7443-exec-4 EamServiceImpl 4397 SYSTEM [nsx@6876 comp="nsx-manager" errorCode="MP40427" level="ERROR" subcomp="cm-inventory"] Invalid url specified
2021-09-06T06:41:48.101Z ERROR http-nio-127.0.0.1-7443-exec-4 EamServiceImpl 4397 SYSTEM [nsx@6876 comp="nsx-manager" errorCode="MP40429" level="ERROR" subcomp="cm-inventory"] Error creating Agency in EAM for CM ########-####-####-####-##########35
This issue occurs due to connectivity issues when downloading the OVF for the third party SVM, this is hosted in the environment based on third party SVM deployment requirements.
The connection may be failing due to blocked port, such as firewalled port.
You can use tools such as netcat to test connectivity from vCenter to location of OVF to be downloaded:
nc -zv <destination-ip-address> <destination-port>
For example:
nc -zv 10.10.10.1 8060
The following guide outlines ports required for NSX-T: https://ports.esp.vmware.com/home/NSX-T-Data-Center
Please review ports required for third party vendor also.