Upon checking the admin/search-service/1/$metadata, there are a bunch of listed Operators in the Complex types such as programIDOperator, activeOperator, personGUIDOperator, etc. These values are not able to be used in API calls.
SAP SuccessFactors Learning Management System (LMS)
These %Operator (% is being used as a wildcard) are not used as filter or search criteria. They store the operator values such as contains, eq, nq, gt, lt, ge, and le and are used by the OData framework.
Please ignore these fields in the OData Reference Guide and in the metadata of the call, these fields will be hidden in a future release.
odata lms sf successfactors learning management system api metadata operator search service admin LRN-59744 , KBA , LOD-SF-LMS-ODA , Web Services OData , Problem