Draft orders are listed on the My Orders page in OPS, and can be deleted (i.e. “discarded”) from there.
Navigate to Finance >> OPS New Request, and click on the My Orders tab. Draft orders will be listed in the table with a status of Draft. To cancel an order, select the Details link under the Order # column. Click the Discard Draft link:
You will be prompted for confirmation:
Click the OK button, and the draft will be removed.