How to disable obtain reference number using box function

When it is considered that there is a risk that unauthorised third parties may be aware of certain tax return data or cases of taxpayers who have published their income tax return (with visibility of box 505), the taxpayer may use the option "Disable obtaining reference via box" of the electronic office to prevent obtaining the file reference via the amount in box 505 of the 2021 income tax return.

This function is permanently disabled until reinstated at a Tax Agency office

You can carry out this procedure at any Tax Agency office or online.The option is available in the section "Gestiones destacadas", "Todas las gestiones" in the Renta portal.

To disable obtaining the reference with box 505, you will have to identify yourself with a certificate, DNI electronic DNI or with Cl@ve PIN.

Check that the details are correct and click 'Accept'.Please bear in mind that if you change your mind, the service can only be reinstated in person at a Tax Office.

After disabling the function, the requesting Tax Code will revoke the last reference number generated, if there is one, and it will no longer be possible to conduct any administrative procedures online using that reference number.However, you will be able to obtain and use references if they are obtained with an electronic certificate, DNI electronic DNI or Cl@ve PIN.

If you access the service for obtaining a reference again, the application will not offer the option of obtaining a reference with box 505 of Renta 2021.