Populating the Action properties and validation are both handled by Interceptors. To ensure that the Action properties are populated regardless of whether validation passes or fails, in the Action's Interceptor Stack, ensure that the prepare} Interceptor comes before the {{validation Interceptor.
<saf:checkboxlist
name="selectedOptions"
list="options"
listKey="id"
listValue="name" />
public void prepare() throws Exception {
}
 | The default stack does place the prepare Interceptor before the validation Inteceptor. |