What does the change to the Work Product format mean for current CPLP credential holders? ATD KB Admin Updated November 04, 2016 18:56 Follow CPLP credential holders do not need to retest under the different format. Related articles What are the CPLP certification requirements in 2016? What CPLP testing policies are changing in 2016? Where can I find more details about the 2016 program? What does the addition of global mindset content mean for CPLP credential holders? Why did ATD Certification Institute add global to the CPLP credential?