Retrieves a program with the specified external ID and namespace.
This method may require higher-level permissions than the caller has, based on their identity and roles and permissions. In these cases, you can ensure the method is called with the required level of authorization by using one of the following:
Namespace for your app or site's benefit programs. Namespaces allow you to distinguish between entities that you created and entities that other apps created.
This method doesn't return any custom errors, but may return standard errors. Learn more about standard Wix errors.