What is the College Board’s policy around resubmitting performance tasks?

According to College Board policy, resubmission of performance tasks across any of the AP Exams isn't allowed.

We understand that in rare circumstances an accommodation may need to be made. This would hold true for the Create performance task only in extreme circumstances (for example, if the student suffered a tragedy in early April after doing the work all year and wants to defer taking the exam until the following year). In that case, the resubmitted Create performance task will be allowed and students will answer the written response prompts included on their end-of-course AP Exam.