A business transformation logic engine for integrating data from a source application to a target application and method thereof are provided. The business transformation logic engine includes a receiving module for receiving data from the source application in a first predetermined format; and at least one transformation handler for transforming the received data into a second predetermined format usable by the target application. The method includes the steps of receiving an XML message including the source data; creating a message context object from the XML message; transforming the message context object using user-configured XSL entries; applying business rules to the transformed message context object; mapping source data elements of the transformed message context object to target data elements; and transforming the XSL-transformed data into a workflow request for integrating the source data to the target application.