A system-wide issue experienced on April 11 resulted in some Comment notifications being filtered out from email delivery. We were able to catch many of these through various reporting queries, but there may be some that are still pending. If you posted a comment in Marketplace (on a Requisition, a PO, a Voucher, etc.) on April 11 and that request has not yet been addressed, please re-post the Comment ASAP to ensure that the appropriate person receives it. 

This issue was only experienced on April 11, however. No further action is required on comments posted on other dates.