Hello @Manisha1
The security style parameter is define at the volume level and no the share level. Once you create the volume, you will set it to either NTFS/mixed/unified or Unix . When the security style is mixed or unified, the effective permissions depend on the client type that last modified the permissions because users set the security style on an individual basis.
Check the below link for additional information:
Manage volume with Ansible:
https://docs.ansible.com/ansible/latest/collections/netapp/ontap/na_ontap_volume_module.html#ansible-collections-netapp-ontap-na-ontap-volume-module
Manage Share with ansible:
https://docs.ansible.com/ansible/latest/collections/netapp/ontap/na_ontap_volume_module.html#ansible-collections-netapp-ontap-na-ontap-volume-module
Security styles and their effects:
https://docs.netapp.com/us-en/ontap/nfs-admin/security-styles-their-effects-concept.html
Thanks
