In the doc "9.7. Integrating the cert-manager Operator for Red Hat OpenShift with Istio-CSR": https://docs.redhat.com/en/documentation/openshift_container_platform/4.14/html/security_and_compliance/cert-manager-operator-for-red-hat-openshift#cert-manager-operator-integrating-istio

 There are serval adjustments need to be made:

• In Example IstioCSR CR, "istio-system" should be "<istio_project_name>"
• In Example issuer.yaml file, "<istio_csr_project_name>" should be "<istio_project_name>"
• In Verification step:

oc get issuer istio-ca -n <istio_csr_project_name> 
# should be
oc get issuer istio-ca -n <istio_project_name>

These changes need to be made to 4.14+ branches.