Modifying Custom Assertion
Pre-requisites:
You must have the API Gateway's manage security configurations functional privilege assigned to modify a policy assertion.
You might want to modify a custom assertion to change the currently defined security settings, such as, authentication scheme, signing and encryption, algorithms and supporting tokens, of SOAP messages.
To modify a custom assertion
1. Expand the menu options icon 
, in the title bar, and select Administration. 2. Select Security > Custom assertions.
A list of all available custom assertions appears.
3. Select the required custom assertion that you want to modify.
4. Modify the fields as required.
5. Click Save.
The custom assertion is updated.
Post-requisites:
When you are ready to put the policy assertion into effect in an API, select it in the appropriate field of Inbound Authentication - Message policy.