There are several reports in the Microsoft Advertising Forum that publishers think they are not going to be paid because the payment area shows their payments as "undeliverable."
These publishers use Microsoft pubCenter to monetize their sites and applications. pubCenter is Microsoft's version of Google AdSense.
Do not worry, says Microsoft representative Ricky Poole, this is just a user interface bug and you will be paid in time. Ricky Poole said:
We are aware payments are showing as undeliverable within the pubCenter UI for most of our international developers; this is unfortunately an error within the UI. If your account has been processed successfully for payment, you should see this reflected in your selected payout method by Friday, February 3, 2012. If after this time, you do not see the payout come through to you, please contact email@example.com with your account number to determine if there are additional items needed to validate your payment methods.
It is our goal to provide you with clear guidance and information as we work to enhance our platform. We appreciate your feedback on how we can work together to create a positive, sustainable monetization experience.
Thank you and we apologize for any inconvenience this may have caused.
So if you see this - relax and be patient and you should get the money due to you.
Forum discussion at Microsoft Advertising Forum.