There is an implementation restriction on OpenActivities. When you query this relationship, security evaluation is implemented for users who don’t have administrator permissions, and you must use a specific sort order: ActivityDate ASC, LastModifiedDate DESC. can any one please help on this.
I"ve talked about these implementation restrictions before. Look here: http://community.skuid.com/skuid/topics/implementation-restriction-on-openactivities . This is not somthing you are going to be able to get around with Skuid.
Thanks for responding.
I read this link before posting my query.
In my page two models and one PopUP(this is used to create new task)
1) Object and Object History.
I granted view all and modify all to user for particular object.
I tried by removing the PoPUP also but still i am facing. How to resolve this.
If you are creating a new task - do not use the OpenActivities sObject. Use the task sObject. You should be able to query other sObjects toward prepopulating data in your task, but if its OpenActivities - you can only query a single record.