We will be implementing a change in the FIX API server on Friday, March 16, 2001, after Trading Hours to validate the Origin Time of any message sent to our system. The date validation will involve new orders, cancel requests, cancel replace requests, and all other messages resent from the client. Starting Sunday, March 18, 2001, the FIX API server will reject the client messages with Origin Time (FIX Tag 42) null or greater than one (1) Working Day prior to the current date. Saturday is not considered as a Working date.

This implies that ONLY messages with the current date or one (1) Working Day prior to the current day will get processed by the FIX API server. All the other messages will be rejected by the server with the error message "RequestValidator: Order is invalid. Entry Time either Null or old date".

If you have any questions, please call the GCC at 312-456-2391 option 2.