Symptoms
VCF Service Runtime is at version 9.1.0 but upgrade requires VSP >= 9.1.1 [VCFMS-PRECHECK-VIDB-VMSP-VERSION-001]VMware Cloud Foundation 9.1
This issue occurs because the VCF Service Runtime needs to be updated to 9.1.1 beforehand.
Update the VCF Service Runtime to 9.1.1.