Under https://docs.openshift.com/container-platform/4.1/service_mesh/service_mesh_install/installing-ossm.html#ossm-cr-example_installing-ossm, the yaml listed under "Full example istio-installation.yaml" should be updated as it is missing a spec section and errors related to this may not be obvious at first.

Specifically, add the text "spec:" in the first column of line 5. For example:

apiVersion: maistra.io/v1
kind: ServiceMeshControlPlane
metadata:
  name: basic-install
spec:

Everything else in the yaml listing should be provided/verified with engineering/QE.