How to disable obtain reference number using box function
When it is considered that there is a risk that unauthorized third parties may be aware of certain information in the declaration or cases of taxpayers who have published their Income Tax return (with visibility of box 505), the taxpayer can use the option "Disable obtaining a reference through box" of the electronic office to prevent obtaining the reference of the file using the amount in box 505 of the 2021 Income Tax return.
The disqualification is permanent until it is rehabilitated in an AEAT office.
You can carry out this procedure at the Administration and through the internet. The option is available in the "Featured procedures", "All procedures" section on the Income Tax portal.
To disable obtaining a reference with box 505 you will have to identify yourself with a certificate, DNI electronic or with Cl@ve .
Verify that the data is correct and click "Accept". Keep in mind that, if you finally change your mind, the rehabilitation of the service can only be carried out in person at the Administration.
After disqualification, the NIF applicant will revoke, if any, the last reference generated and with that reference number will not be able to carry out procedures through the internet. However, you will be able to obtain and use references if they are obtained with an electronic certificate, DNI electronic or Cl@ve .
If you access the reference obtaining service again, the application will not offer the option to obtain a reference with box 505 of Income 2021.