I'll throw a few things out there. The first thing I noticed is the operating system is not on the support matrix for vRA https://www.vmware.com/pdf/vrealize-automation-62-support-matrix.pdf . Second if you are updating the template to a new operating system you need to make sure that in your build profile or in a property of the template you set VMware.VirtualCenter.OperatingSystem accordingly. I'll assume it should be set to sles12_64Guest. Lastly you'll need to make sure that your underlying vSphere infrastructure can also support SLES12. You might be able to get this to work but it appears like with the current version of vRA you would not be in a supported configuration.
Paul
