Announcement: New Design for docs.informatica.com!
We have updated the look and feel of docs.informatica.com. To load the latest design, press CTRL-F5 to clear the pages you previously cached on our site, or simply restart your browser.
By default, the Integration Service concurrently reads sources in a target load order group. However, you can write the external procedure code to block input data on some input groups. Blocking is the suspension of the data flow into an input group of a multiple input group transformation.
To use a Custom transformation to block input data, you must write the procedure code to block and unblock data. You must also enable blocking on the Properties tab for the Custom transformation.