message in the source defines error
requested behavior not implemented by object
requested behavior must be implemented by subclass
invalid combination of set messages for create
invalid operation for current state of receiver
argument value not valid
improper use of Create subclassing framework
incorrect sequence of Create protocol messages
no more memory available for allocation
no more memory available for allocation
unexpected condition encountered in program
method from Object with invalid allocation
method inherited from Object superclass
object does not comply with expected protocol
unable to access a resource
unable to save a resource