An INCOSE Systems Engineering Professional Certification is valid for a period of three years for CSEP and five years for ASEP. It is renewable for three or five year periods, respectively. Renewal is not required for ESEP, but ESEPs do need to maintain their INCOSE membership.

INCOSE Systems Engineering Professionals (SEPs) should track their professional development activities throughout their certification period.  They should keep a log of these activities and additional supporting information in case they are audited. 

The requirement for continuing professional development is intended to reinforce the need for lifelong learning in order to stay current with changing technology, equipment, procedures, processes, and established standards. Systems Engineering Professionals are encouraged to select meaningful courses/activities which will be of benefit in the pursuit of their chosen areas. The definition of Course/Activity is: "Any qualifying course or activity with a clear purpose and objective which will maintain, improve, or expand skills and knowledge relevant to the CSEP’s or ASEP's area of expertise." In addition to courses, technical society participation, publications, and some job activities can count for professional development. 

More information is posted at How Do I Renew (incose.org)