When a PowerCenter domain contains a grid, you can run a web service workflow on a grid. Create the grid and associate an Integration Service with the grid in the Administrator tool. Then assign the Integration Service to run the web service workflow.

To run a web service workflow on a grid from a client application, run the web service workflow on the Integration Service associated with a grid.

You can also enable the session to run on a grid. When a session runs on a grid, the Integration Service distributes the session threads across the nodes in a grid. To run a session on a grid, add a message ID to the web service source and target definitions. The Integration Service uses the message ID to associate the web service input and output messages across the nodes.