Please find the below link for FAI Garda Vetting.
If possible renew your garda vetting when notified otherwise you will have to start the process from the start.
All documents can be viewed and downloaded from here
Garda vetting | Football Association of Ireland
Applications by post or email will not be accepted.
Referee Vetting Portal
Your application will be checked by the FAI and if there are any errors the forms will be returned to you for correction and re submission through the FAI Portal. If the forms are correct, then you your details will be entered onto the National Vetting Bureau (NVB) e-vetting system. You will then receive an Email from the NVB inviting you to the second stage of the process. Full details of the process can be found in the attached guide
If you have any queries regarding this process or I can assist you in any way please fell free to contact me.
Rob – FAI Referee Department