Split, Buy-Out, Return of Capital, Capitalized Cost, Spin-off, and Stock dividends can be edited* or deleted from Corporate Actions.
Cash dividends can be edited by the Trsancation Hist report (editing trades related to this Corporate Action)
Corporate Action windows allow users to DELETE an already inserted corporate action and re-insert it with new values.
*It is NOT POSSIBLE to edit a Corporate action with an ExecutedDate equal to or less than today (= already executed)
Cash Dividend – Look for DIV trades in the Transaction History report, identify them, and edit them if needed in order to edit this corporate action.