The following upgrade event is planned:
On 12 July 2013, from approximately 2:00 p.m. to 6:00 p.m. SGT, there will be intermittent outages with an increased number of “10001 – Internal Error” and/or “520002 – Internal Error” responses for API calls. Please reference this blog for specific details of the maintenance and potential impacts.
For real time system updates, please go to www.paypal.com/sitestatus.
Thank you for your understanding.