An Application Source Qualifier in a mapping determines how the PowerCenter Integration Service reads data from the JMS source. The PowerCenter Integration Service reads messages from the JMS source based on the connected ports and transformation properties. To extract data from multiple JMS sources, you must have an Application Source Qualifier for each source definition in the mapping.

After you create an Application Source Qualifier, you can set several configuration options. You might want to change numeric or date datatypes to string to maintain accuracy during conversion.