50056: Sorry, we are having a service interruption and we are unable to complete your transaction.
There seem to be some bigger issues today for scheduling Microsoft exams as many have reported about the same issue, please note that Microsoft Certification / Exams is currently not supported in the Q&A forums, the supported products are listed over here https://docs.microsoft.com/en-us/answers/products.
You can ask the experts in the dedicated Microsoft Certification - Exams - Exam Registration and Scheduling forum over here:
(If the reply was helpful please don't forget to upvote and/or accept as answer, thank you)
3 people are following this question.