No valid endpoints found in the Management Agent

You may encounter the following exception during vRA 7.x patching

While executing patchscript.sh file, following exception, is seen

_main__ - ERROR : 242 - ('Command execution result:\nCommand id: edc117f3-bd3e-4589-8891-a9c889f2262f\n Type: upgrade->management-agent\n Node id: 523C2C66-A308-43AE-8D2A-63FE41C19A9F\n Node host: seveniaas.prem.com\n Result: No >valid endpoints found in the Management Agent\'s configuration.\n Result description: System.InvalidOperationException: >No valid endpoints found in the Management Agent\'s configuration.\r\n at >VMware.IaaS.Management.Commands.Installation.ParameterHelper.GetFirstAvailableEndpointFromContext(IExecutionContext >context)\r\n at VMware.IaaS.Management.Commands.Installation.ParameterHelper.SetContextParameters(IExecutionContext >context, InstallParameters installParameters)\r\n at >VMware.IaaS.Management.Commands.Installation.UpgradeManagementAgentCommand.Execute(IExecutionContext context, IList`1 >parameters)\n Error: {"1":[{"resultDescr":"System.InvalidOperationException: No valid endpoints found in the Management >Agent\'s configuration.\\r\\n at >VMware.IaaS.Management.Commands.Installation.ParameterHelper.GetFirstAvailableEndpointFromContext(IExecutionContext >context)\\r\\n at VMware.IaaS.Management.Commands.Installation.ParameterHelper.SetContextParameters(IExecutionContext >context, InstallParameters installParameters)\\r\\n at >VMware.IaaS.Management.Commands.Installation.UpgradeManagementAgentCommand.Execute(IExecutionContext context, IList`1 >parameters)","resultMsg":"No valid endpoints found in the Management Agent\'s configuration."}]}\n Status: FAILED\n\n', >'Error executing command')

This resolution works only if there aren't any patch applied in the environment i.e Environment is on GA

Here's the resolution

1. SSH into the virtual appliance master node and replace the "isApplied" value to true by running this command: 
sed -i 's/false/true/g' /usr/lib/vcac/patches/repo/contents/vRA-patch/self-patch.json

2. Take "vCAC-IaaSManagementAgent-Setup.msi" file from this location of virtual appliance master node: "/usr/lib/vcac/patches/repo/contents/vRA-patch" and put into all the IAAS Nodes.

3. Uninstall previously installed management agent and install new management agent by clicking this new vCAC-IaaSManagementAgent->Setup.msi file.

4. After management agent is installed successfully in all IAAS Nodes, Verify in cluster tab of vRA that version of >management agent has been updated for all the IAAS Nodes.

5. Run precheck. Once precheck is successful start installation of the patch.

6. After patch is installed succesfully, SSH into the virtual appliance master node and run selfpatch again by executing this command: sh /usr/lib/vcac/patches/repo/contents/vRA-patch/patchscript.sh

7. Now you shouldn't see the error "No valid endpoints found in the Management Agent\'s configuration" in the logs. If >above executed command completes successfully, Installation is completed.