A deal whose expected close date has moved to a later period at least once. A deal that has slipped twice or more is the strongest single predictor that it will slip again.
From the pipeline history: each time a deal's close date moves to a later period, count a slip. Report the count per deal and the pattern per representative.
One slip is ordinary. Two is a pattern. A forecast that depends on deals with two or more slips is a forecast built on the deals least likely to close on time, and the bridge should say so.
A deal pushed is one the team chose to move, usually with a reason. A deal slipped is one that moved because the customer did not act. Both delay revenue; only one is under the team's control.
An open deal whose expected close date has moved to a later period at least once, identified from weekly pipeline snapshots, with the number of moves.
A $220,000 deal has moved from March to June to September. On this team, deals that slipped twice close 9 percent of the time against 31 percent for those that never slipped.
Close dates overwritten with no history, so a deal pushed three times looks like a new one in the forecast.