The Payment Deadline is the last day on which you can submit payment for DEDP courses in order to become eligible to sit for their Proctored Exam at the end of the semester (for courses being offered in a specific semester). No extensions can be offered for the DEDP Payment Deadline.
If you plan to sit for the Proctored Exam for a DEDP course at the end of a specific DEDP semester, then you must submit payment for that course before the Payment Deadline for that semester. If you submit payment after the deadline, then you will need to wait for a future semester to sit for that course's Proctored Exam.
The DEDP program runs courses during three semesters per year and each course is offered between one and three times per year. The Proctored Exam for each course is available only at the end of the semesters during which that course was offered. For more information about the DEDP Program's schedule of course availability please refer to this FAQ article.
You may find the current and upcoming DEDP semester's Payment Deadlines—along with other important dates and deadlines—on the DEDP Program's Upcoming Dates page.