= Authorization Changes

The following sections relate to how to adapt to changes in the authorization support.

== Method Security

[[compile-with-parameters]]
=== Compile With `-parameters`

Spring Framework 6.1 https://github.com/spring-projects/spring-framework/issues/29559[removes LocalVariableTableParameterNameDiscoverer].
This affects how `@PreAuthorize` and other xref:servlet/authorization/method-security.adoc[method security] annotations will process parameter names.
If you are using method security annotations with parameter names, for example:

[source,java]
.Method security annotation using `id` parameter name
----
@PreAuthorize("@authz.checkPermission(#id, authentication)")
public void doSomething(Long id) {
    // ...
}
----

You must compile with `-parameters` to ensure that the parameter names are available at runtime.
For more information about this, please visit the https://github.com/spring-projects/spring-framework/wiki/Upgrading-to-Spring-Framework-6.x#core-container[Upgrading to Spring Framework 6.1 page].