safeToIgnore

               In the event that a Web Feature Service does not recognize
               the vendorId or does not recognize the vendor specific command,
               the safeToIgnore attribute is used to indicate whether the 
               exception can be safely ignored.  A value of TRUE means that
               the Web Feature Service may ignore the command.  A value of
               FALSE means that a Web Feature Service cannot ignore the
               command and an exception should be raised if a problem is 
               encountered.