Problems whith menu

I have problems when i undo a menu on the solution explorer and portal. on p9000 when i click on delete button, this messagge appear: "This task is in a task relationship and must be removed before it can be deleted." what do you do? there arent documentation about this errror. thanks

It means that the task is being used somewhere else on another task and as a result it will not let you delete it until all relationships to that task are cleared. You have to find out where it is being used and remove the relationship then you will be able to delete it.

Thanks, Soul Glo.