3509471 - Error Occurs While Trying to Change the end Date of the Project Task

An error occur when attempting to change the end date of the project task to DD.MM.YYYY. 
Error - End date of work must be before earliest finish date of task

SAP Business ByDesign

Project Management, Project Task, End Date, Error, Earliest Finish Date, Schedule, Work Tab, Finish Constraint Date; End date of work must be before earliest finish date of task , KBA , SRD-PRO-PMN , Project Management , Problem