VMware Cloud Foundation 9.x
The 9.0 CAP upgrade checks for the partnerBundleMetadata.json and vxrailPartnerBundleMetadata.json on the SDDC manager. If the files exists, the upgrade marks the environment as VxRail which is currently not a supported upgrade path.
rm /nfs/vmware/vcf/nfs-mount/bundle/vxrailPartnerBundleMetadata.jsonrm /nfs/vmware/vcf/nfs-mount/bundle/partnerBundleMetadata.json