Authorization Validation Service Request Display

Dear All, I have a link that goes directly to the web IC with the following parameters: &crm-object-type=CRM_SRQM_INCIDENT &crm-object-action=B &crm-object-keyname=ORDER&= &crm-object-value=E4CD6F5418369B09E1000000AC1C9B12 (SR ID) I need to do a custom authorization check to check if the user can display this service request. Do you know in which class and method i can put my custom code to check the authorizations? I did the code for edit and save of the service request, and also when you click on the service request ID on agent inbox search and SR search, but when using the link the validation is never checked. Many Thans in advance for your help and best Regards, João gaifém