Self-certification under REX enables exporters to self-declare origin while requiring post-verification and prescribed fees and standard SOPs. The Handbook of Procedures now recognises REX based self certification of Statements on Origin under the GSP Scheme and requires competent Local Authorities to perform post verification of self certified Certificates of Origin on request, with fees in Appendix 2K and TA/DA recoverable separately. Beneficiary countries must maintain a verification system and follow the Standard Operating Procedure for verification of eCoOs set out in Annex II to Appendix 2C; these provisions are inserted into paragraph 2.104(c) of Chapter 2.