Import of the VMware-vCenter-Server-Appliance-8.0.3 zip file failed
Step 1 - Successful
Step 2 - Failed with error
VMware vCenter Server 7.0.x
VMware vCenter Server 8.0.x
The error encountered with vCenter Lifecycle Manager was due to attempting to import a vCenter ZIP file.
Note: VMware vSphere Lifecycle Manager enables centralized and simplified lifecycle management for VMware ESXi hosts through the use of images and baselines.
Please follow the instructions in the below article to perform the upgrade on vCenter.
Please find details of Lifecycle manager usage below: