When you project the cookie port to a web service request message, the web service provider returns a cookie value in the response message. You can pass the cookie value to another transformation downstream in the mapping or you can save the cookie value in a file. When you save the cookie value in a file, you can configure the cookie as input to the Web Service Consumer transformation. You can project the cookie output port to any of the Web Service Consumer transformation output groups.

To increase performance, the Data Integration Service can apply the early selection or push-into optimization method with the Web Service Consumer transformation. To apply early selection optimization, the web service cannot have side effects and cannot treat faults as errors. To apply push-into optimization the web service cannot have side effects, cannot treat faults as errors, and the filter condition must reference pass-through ports.

The web service has a side effect if it performs other functions besides returning a response to the Web Service Consumer transformation. The web service has side effects if it modifies a database, writes to a file, writes emails, updates a count, or calls other web services with side effects.

To increase mapping performance, configure the Web Service Consumer transformation to send multiple requests in parallel. When you enable the Web Service Consumer transformation to create multiple concurrent connections to the web service, you can set the memory consumption limit and the number of concurrent connection limits.