This issue occurs when the offline depot is configured in SDDC Manager, but the corresponding repository configuration is missing from the vCenter Server Lifecycle Manager. Because vLCM lacks the offline UMDS depot as a download source, it cannot synchronize the image metadata or bundles required for image creation and management.
To resolve this issue, manually configure the vCenter Server Lifecycle Manager to use the offline UMDS depot as a download source Configure vCenter Server to use offline UMDS
https://[HOSTNAME]/vmware/vcf/umds/patch-store/hostupdate/__hostupdate20-consolidated-index__.xml [HOSTNAME] with the FQDN of your UMDS server.