When message flow processing has paused at a breakpoint on entry to a node that contains ESQL code, Java code, or mappings, you can step through the code.

The nodes that can contain ESQL code, Java code, or mappings are listed in:
Flow debugger overview. Add breakpoints as appropriate:
- ESQL code: add a breakpoint in the ESQL code.
- Java code: add a breakpoint in the Java code.
- Mappings: add a breakpoint to a map using the Map Script panel. Note that mapping routines are implemented in ESQL; you might choose to step through the ESQL code rather than the mappings.

To step through your source code:
Next:
If you have completed debugging this message flow, you can remove the breakpoints, or end the debugging session: