Throttling is a QOS feature configured from the CASA Editor.
# In the CASA Editor, click the QOS icon located on the link between the JBI Module and the WSDL port you want to configure.
The QOS Properties Editor appears.
In the QOS Properties Editor, click the property field for maximumConcurrencyLimit under ThrottlingExtension, and enter an integer for the maximum number of concurrent messages allowed for this endpoint.
Click Close.
The appropriate throttling configuration for the connection is generated in the project's jbi.xml file, when the service assembly is built.