No action. A capability to Update Tender potentially creates complex distributed agreement protocol issues. What is the status of an already issued contract that partially consumed a Tender, and still referencing that Tender, if the Price and/or the Quantity of that tender is Updated? In cases where the matching engine uses Time if Issue to award contract to the earlier of two similar tenders, is the original Tender date or the Updated Tender Date used? The indicated action, that the Actor cancel the original tender and issues the new, is the appropriate choice. The expectation is that any part of the Tender consumed by a Contract prior to the "cancel" stands as it is.