...
While designing the process flow, double click the mapping activity that you have created using context schema definition. Properties of the mapping activity are displayed.
Change the value of Consume Stream or Generate Stream property to false.
Info If Context Schema is used at source side, then at run time the actual value of these context variables will be used in the Data mapping. Similarly if Context Schema is used at target side then the output of the data mapping will be parsed and corresponding new value of these context variables will be set.