European watchdog the Article 29 Working Party (WP29) has published recommendations and guidelines on how Google should implement the Right to be Forgotten ruling, saying that the scope should be widened.
The current system, which has often been criticised, sees Google delisting some pages that people have asked to be removed, but only in Europe.
WP29 said that this should be extended internationally so that offending pages are 'forgotten' in a more complete way.
The group claimed that this is the only way to guarantee that an individual's or data subject's rights are protected in line with the European Court of Justice mandate.
"Limiting delisting to EU domains on the grounds that users tend to access search engines via their national domains cannot be considered a sufficient means to satisfactorily guarantee the rights of data subjects according to the ruling," said a WP29 'right to be forgotten' press release (PDF).
"In practice, this means that, in any case, delisting should also be effective on all relevant .com domains."
The Right to be Forgotten was established by the European Court of Justice in May 2014 and caused immediate debate about how it should be managed and how it might be abused.
Google has held a series of events in Europe to discuss the ruling, but has been criticised for its response and the way it presents the ruling in public.
Europe's response to Google's apparent reluctance has been firm. In the summer EU justice commissioner Martine Reicherts criticised Right to be Forgotten opponents, claiming that the arguments against the reform are "wrong".
V3 asked Google to respond to the views of the WP29, and was told that the company does not currently have access to the details.
"We haven't yet seen the WP29 guidelines, but we will study them carefully when they're published," Google said.
Google's most recent transparency report shows that the company has been approached 170,000 times concerning 600,000 URLs and has applied the ruling 41 percent of the time.
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