A/HRC/RES/16/12 15. Urges all States parties to withdraw reservations that are incompatible with the object and purpose of the Convention on the Rights of the Child or the Optional Protocols thereto; 16. Urges all States that have not yet ratified both the Convention concerning the Prohibition and Immediate Action for the Elimination of the Worst Forms of Child Labour, 1999 (No. 182) and the Convention concerning Minimum Age for Admission to Employment, 1973 (No. 138) of the International Labour Organization to consider doing so as a matter of priority; 17. Requests the High Commissioner to prepare a summary of the full-day meeting on the rights of the child, as a follow-up to paragraph 7 of Council resolution 7/29 of 28 March 2008, before the seventeenth session of the Council; 18. Invites the Office of the High Commissioner to conduct a study on challenges, lessons learned and best practices in a holistic, child rights and gender-based approach to protect and promote the rights of children working and/or living on the street, including practices in the collection of disaggregated data and experiences on access to child-friendly counselling, complaint and reporting mechanisms to protect the rights of children living and/or working on the streets, in close collaboration with relevant stakeholders, including States, the United Nations Children’s Fund and other United Nations bodies and agencies, the Special Representative of the Secretary-General on violence against children, the Special Representative of the Secretary-General for children and armed conflict, the Special Rapporteur on the sale of children, child prostitution and child pornography and other relevant special procedures mandate holders, regional organizations, civil society, national human rights institutions and children themselves, and to present the study to the Human Rights Council at its nineteenth session; 19. Decides to continue its consideration of the question of the rights of the child in accordance with its programme of work and Human Rights Council resolution 7/29, and to focus its next full-day meeting on children and the administration of justice; 20. Welcomes the work and contributions of the Special Rapporteur on the sale of children, child prostitution and child pornography, and decides to extend for a period of three years the mandate of the Special Rapporteur, in accordance with Human Rights Council resolution 7/13 of 27 March 2008. 46th meeting 24 March 2011 [Adopted without a vote.] 6