In VCF 9.0, when deployingVCF Automationusing the VCF Installer in aSimple Deployment Model, the appliance requirestwo IP addresses:

Primary IP– Management interface

Secondary IP– Required for service separation and internal routing for Automation services

VMware’s JSON schema for VCF Installer enforces this requirement. If the second IP is missing, incorrectly formatted, or placed under the wrong JSON section, the installer validation will fail immediately with a JSON schema error before deployment begins.

This is one of themost common causesof validation failure for VCF Automation deployment.

Option A (component binaries missing) produces abundle downloaderror, not JSON schema failure.

Option C (NSX Manager size = large) is allowed and does not break JSON validation.

Option D (separate vDS for vSAN) is allowed if defined correctly and also does not cause JSON schema failure.