The expression itself does not appear as such in art. 5 of the Organic Law 15/1999, thus a rephrasing is needed. Something like “mandatory/compulsory reporting obligation” (to users) is an option.


http://noticias.juridicas.com/base_datos/Admin/lo15-1999.t2....
Artículo 5 Derecho de información en la recogida de datos
1. Los interesados a los que se soliciten datos personales deberán ser previamente informados de modo expreso, preciso e inequívoco:

https://www.agpd.es/portalwebAGPD/english_resources/regulati...
Article 5. Right of information in the collection of data
1. Data subjects from who personal data are requested must previously be informed explicitly, precisely and unequivocally of the following:

This refers to the UK:
http://www.eversheds.com/global/en/what/articles/index.page?...
For the first time in the UK, processors will become directly subject to certain legal data protection obligations and subject to the jurisdiction of the data protection regulators. It is not always clear how these changes will work in practice eg where both controller and processor have reporting obligations.



--------------------------------------------------
Note added at 1 day1 hr (2014-12-17 13:33:10 GMT)
--------------------------------------------------

One more reference regarding the query term (does not refer to the Law 15/1999, but to the Law 34/2002). "Reporting obligation" is an option that fits the context perfectly well.
http://gestagram.com/aviso-legallegal-notice/
Aviso legal/privacidad/cookies
En cumplimiento con el deber de información recogido en el artículo 10 de la Ley 34/2002, de 11 de julio, de Servicios de la Sociedad de la Información y del Comercio Electrónico, a continuación se declara gestagram como un sitio web personal gestionado por XXXXX (en adelante, “el prestador”) con domicilio en Barcelona.

In compliance with the reporting obligations contained in Article 10 of Law 34/2002 of July 11, Services Information Society and Electronic Commerce, then gestagram.com is declared a personal website managed by XXXXX (hereinafter “the provider”) residing in Barcelona.