When using Websphere Transformation Extender (WebSphere TX) maps on DataPower, the typical transformation task is to transform a file from one format to another without any augmentation or data validation steps. When a second input is necessary, the DataPower Policy Rule requires a number of changes to enable multiple inputs or outputs. This article shows you how to configure DataPower to execute the WebSphere TX Map with multiple inputs.
http://www.ibm.com/developerworks/websphere/library/techarticles/1004_sumner/1004_sumner.html
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