Looking here:
https://docs.openshift.com/container-platform/4.16/edge_computing/image_based_upgrade/preparing_for_image_based_upgrade/cnf-image-based-upgrade-install-operators.html#ztp-image-based-upgrade-installing-oadp_install-operators

The example for DataProtectionApplication.yaml has a wrong apiVersion

Currently the doc shows:
apiVersion: oadp.openshift.io/v1

Using this apiVersion will result in the following error:
message: NonCompliant; violation - secrets [cloud-credentials] not found in
namespace openshift-adp; violation - couldn't find mapping resource with kind
DataProtectionApplication, please check if you have CRD deployed; violation

• couldn't find mapping resource with kind BackupStorageLocation, please check
  if you have CRD deployed

The correct apiVersion is:
apiVersion: oadp.openshift.io/v1alpha1