Which is a requirement for using AFIP's online services?

Using AFIP's online services requires taxpayers to have proper credentials that verify their identity and grant them access to these services. This typically involves a unique tax identification number and a password or code that is associated with their taxpayer profile. These credentials are vital for ensuring secure transactions and protecting personal information within the online portal.

While an active email account can be useful for notifications and communications, it's not strictly required for accessing online services. Similarly, a credit card may be needed for certain payments, but it isn't necessary for all online interactions with AFIP. Registration with local authorities pertains more to the legal standing of the taxpayer rather than their ability to use the online platform. Therefore, having taxpayer credentials is the core requirement needed to effectively utilize AFIP's online services.