Once you've earned your Project Management Professional (PMP) certification from the Project Management Institute (PMI), you'll need to fulfill PMP PDU requirements to maintain your credential.

As a PMP credential holder, you need to earn 60 Professional Development Units (PDUs) over a three year period to maintain your PMP.

This period is known as the Continuing Certification Requirements (CCR) cycle.

For PMP credential holders, the CCR cycle starts the day the PMP certification exam was passed and ends on the same date three years later.

In some cases, PMP credential holders may end up earning more than the required 60 PDUs during their particular CCR cycle. In this situation, there may be an opportunity to transfer excess PDUs from one CCR cycle to the next.

As per the PMP Handbook, PMI allows for the transfer of up to 20 PDUs to the next CCR cycle provided that the excess PDUs were earned in the final year (12 months) of the current CCR cycle.

The online CCR system at pmi.org will automatically transfer any eligible PDUs over the required 60 PDU amount into the next CCR cycle.