As part of some internal technical improvements to Accept.js, the length of the payment nonce used in Accept.js will be increasing on March 2, 2017. This change shouldn’t pose a problem, as there has never been a specified length for the payment nonce, nor should it be stored anywhere.
However, we want to inform developers of this change just in case anyone has made assumptions about the length of the payment nonce and put limitations in their code accordingly.
The change is live in the sandbox as of today to allow you to test your solutions ahead of the production change date of March 2nd.