d) The service provider has failed without reasonable justification to produce relevant information or documents to the Authority required pursuant to this Decree-Law or any regulatory measure made under it; or e) The service provider has failed to comply with a requirement set forth in Chapters VI, VII, VIII, IX, X, XI or XIII of the present Decree-Law or any regulatory measures made under those provisions. 2. The Authority may only suspend or revoke a service provider’s registration in the case of subparagraphs c), d) and e) of the preceding paragraph where: a) The service provider has failed to rectify the situation of non-compliance within a reasonable period of time after being requested to do so by the Authority; b) The relevant non-compliance has occurred repeatedly and, along with other repeated incidences of material non-compliance, shows an accumulated pattern of serious disrespect for the present Decree-Law and regulatory measures made under it; c) The relevant non-compliance has or is likely to have a material adverse effect on other service providers, consumers or competition, or significantly hinders the Authority from performing its functions or responsibilities or exercising its powers pursuant to the present Decree-Law; d) The suspension or revocation of a service provider’s registration is proportionate to the seriousness of the non-compliance; and e) All other effective remedies have been exhausted including any imposition of administrative penalties. 3. The revocation of a service provider’s registration and the application of specific conditions shall be subject to paragraph 4 of Article 19. Article 33 Database of registered service providers The Authority shall maintain on its website an up-to-date database of all names and contact information of persons registered pursuant to this Chapter. CHAPTER VI COMPETITION Article 34 Anti-competitive practices 1. Service providers shall not enter into any formal contract or informal agreement, or engage in conduct that has the purpose or effect of preventing, restricting or distorting competition in any appreciable manner in any telecommunications market.