The conversion tool ran from a ZTP 4.21 container fails:

Successfully read SiteConfig: helix58/site-plan-helix58
Converted cluster 1 (helix58) to ClusterInstance: /scin/helix58/helix58.yaml
WARNING: extraManifests field is not supported in ClusterInstance and will be ignored. Create one or more configmaps with the exact desired set of CRs for the cluster and include them in the extraManifestsRefs.
WARNING: Added default extraManifest ConfigMap 'extra-manifests-cm' to extraManifestsRefs. This configmap is created automatically.
Successfully converted 1 cluster(s) to ClusterInstance files in /scin/helix58/: helix58.yaml
Generating ConfigMap kustomization files...
Using ConfigMap name: extra-manifests-cm, namespace: helix58, manifests directory: extra-manifests
Generating ConfigMap kustomization files with name: extra-manifests-cm, namespace: helix58, manifests directory: extra-manifests
Generating extraManifests for SiteConfig: /scin/helix58.yaml
Using absolute path for input file: /scin/helix58.yaml
Running siteconfig-generator from directory: /scin
Error: Failed to generate kustomization files: siteconfig-generator failed: exec: "siteconfig-generator": executable file not found in $PATH

However running a ZTP 4.20.x container on the same source files runs correctly.
    

skopeo --override-arch amd64 --override-os linux inspect --no-tags docker://registry.stage.redhat.io/openshift4/ztp-site-generate-rhel8:v4.21-2 
{
    "Name": "registry.stage.redhat.io/openshift4/ztp-site-generate-rhel8",
    "Digest": "sha256:0b4983f9381584428a534b960ec6eb07dafedbff61b958e1dc3ad14cbca11136",    


    

Always
    

    1. Run siteconverter tool from ZTP 4.21 container
    2. Review command output
    3.
    

Fails with error
    

Runs successfully