1.9 Periodic Review and Cessation of Norms
1. Diocesan structures, offices, and bodies (see #3.1 Diocesan Structures- Offices- and Bodies) are advised periodically to review any policies, procedures and other norms that fall under their areas of competence so that they remain current, relevant and correct.
2. Unless provision is made for a norm to expire in a given time, the modification or revocation of such policies, procedures and other norms is treated in a manner similar to their establishment. 
 See c. 20 on derogation and abrogation.