By signing the Optional Protocol to the ICESCR, states recognise the competence of the Committee on Economic, Social and Cultural Rights to receive and consider complaints from individuals or groups who claim their rights under the Covenant have been violated. However, complainants must have exhausted all domestic remedies. The Committee can "examine", works towards "friendly settlement", in the case of grave or systematic violations of the Covenant, it can "invite that State Party to cooperate" and, finally, could "include a summary account of the results of the proceedings in its annual report". The following seven countries have ratified the Optional Protocol to the International Covenant on Economic, Social and Cultural Rights: Bolivia, Bosnia and Herzegovina, Ecuador, El Salvador, Mongolia, Slovakia, and Spain. A further 32 countries have signed the optional protocol.