In order for certain end users to be able to use the OC SDK, it must be a certified collection in the Ansible Automation Hub.
Here is a link to their requirements:
https://connect.redhat.com/sites/default/files/2023-04/ABU%20Ansible%20Certification%20Workflow%20Guide.pdf
Reference the ibm-zos-core collection's certification card:
ansible-collections/ibm_zos_core#606