Add filter in external career site for pipeline job requestions

Summary:

Hi Everyone,

We're working on adding custom filters in external career site for pipeline job requestions but I don't see Field Requisition Type available for selection. Within this filter we have to add new filter as well but we're stuck at first requirement of adding filter for pipeline job requestions.
I checked following docs
https://docs.oracle.com/en/cloud/saas/talent-management/25b/faimh/configure-career-site-search-filters.html
https://docs.oracle.com/en/cloud/saas/talent-management/25b/faimh/add-job-requisition-flexfields-as-search-filters-in-career-sites.html#Create-Job-Requisition-Descriptive-Flexfields
but info mentioned here did not help addressing this issue.
Can you please let me know how this requirement can be addressed.