A participant can cancel a pending transaction at any time prior to valued recycle cutoff (approximately 3:10 PM EST). You can cancel a pending transaction from either the Pending Transaction Inquiry page or the Activity Research Tool page (see the Activity Research Tool topics under Procedures in the main help file's Table of Contents).
You can view a summary of your cancelled transactions by selecting Cancel Summary in the Go To drop-down box on the Pending Activity Inquiry page. To view more information on Pend Cancel, please see the Settlement Service Guide on the Web at dtcservices.dtcc.com
To cancel a pending transaction
Open the Pending Activity Inquiry page.
In the Action drop-down list, select Cancel for the transaction you want to cancel.
Click the Submit button.
The transaction is cancelled and its status shows as *CANCELLED in the Reason column.