The Policy Manager does not show all of the expected and required Assertions.
API Gateway 9.X, 10.X
This is most likely due to the kind of License you have registered with the Gateway. There are three types of license files: Essentials, Enterprise and Micro Gateway
Different levels of functionality are associated with the Gateway depending on how it is licensed. Some Assertions and Functionality are only available with an Enterprise level license.
Please see the Product Summary
(Use the version selector to choose the Gateway version relevant to you)
Work with your Account Manager or the Licensing Team to inquire about your Licensing requirements.