Administer > Manage WebSphere Commerce features > Management Center > Installment rules
Configure tracing for the installments engine
Enable tracing to investigate installment rules that are not working as expected or exceptions on the storefront.
Use the WebSphere Commerce Server logging service to enable tracing so that you can handle logging and tracing configurations by enabling tracing at server startup, enabling tracing on a WCS instance, or enabling logging on the WebSphere Commerce client library on a stand-alone program.
The trace component for the installment engine is...
com.ibm.commerce.installment