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Jayanth ThathapudiJayanth Thathapudi 

Field is not writeable: OpenActivity.OwnerId

List<OpenActivity> openList=  new List<OpenActivity>();
for(OpenActivity oA :OpenActivitieslist){
                                oA.OwnerId=''012200000000MqA';
                                openList.add(oA);
                        } 

    Update openList;

While I am trying to upade it is showing error as "Field is not writeable: OpenActivity.OwnerId"

Any help is highly appreciated:)

Thanks,
Jay
Linga_RaminLinga_Ramin
Hi Jayanth,

Please check the Field type in Object and also you have given double quotes to oA.OwnerId (oA.OwnerId=''012200000000MqA';).As per my understanding it was expecting ID but you gave String type.Please check it