Which log level must you use to examine the payload at specific processing steps in...

To examine the payload at specific processing steps in an integration flow, you must use the Trace log level. The Trace log level provides the most detailed information about the message processing, including the payload content and the headers at each step. You can use the Message Processing Log to view the trace logs for a specific message. References:  Modernize Integration with SAP Integration Suite | openSAP