A Google Places Help thread has several reports from business owners trying to verify their businesses in Google Places.
They want to verify their businesses so that the business can show up properly in Google Maps search results. The issue is, it does not appear to be working for all.
When some try to verify their business, they are getting errors. One said:
I recently put on a question about the system error that won't allow people top access their Google Place account page. (System Error: We're sorry, but we are unable to serve your request at this time. Please try back in a few minutes ) on 02/14/11
I've read through previous posts etc, but can't find a solution. This only happened when the page was accessed from another location, could that be the reason that it happens to anyone?
Since that post, several others came in with the same issue.
Googler Brianna said Google fixed the issue last Thursday, the 17th, but it was not fixed and the issue is still causing issues for some business owners.
Knowing Google Maps resources or priorities, I doubt they will be able to fix this or other issues any time soon.
Forum discussion at Google Places Help.