For analyzing the process around Carrier Cloud for SAP, there are several options.

Logging and Monitoring

Following capabilities are provided for logging and monitoring:

The application logs for called proxy methods can be viewed in transaction SLG1 with the object /SCWM/WME and the subobject /SHIP/CCO.
To monitor the shipments either use the transaction /SHIP/CCO_COCKPIT or open the Carrier Cloud for SAP interface.
Use transaction SPPFP to monitor the PPF processing logs.
There are processing protocols in the AEB Carrier Connect Shipment.
Active the Webservice Trace via transaction SRT_UTIL

Useful Debugging

To debug different useful methods, use the checkpoint group /SHIP/CCO in transaction SAAB.

Scheduling Condition

The scheduling condition evaluation is done in class /SHIP/CL_IM_SC_SHIP_LABEL in method IF_EX_EVAL_SCHEDCOND_PPF~EVALUATE_SCHEDULE_CONDITION.

The check is positive if the returning parameter rc = 0.

Shipment creation

To analyze the data for the shipment creation, go to class /SHIP/CCO_CL_CARRIER in method SET_SHIPMENT.
There are two different structures. The first structure (request) contains the data sent from the SAP system.

The second structure (response) contains the answer from the webservice call:

Printer determination

The printer determination is done in class /SHIP/CCOCLCARRIER in method PRINT_LABEL.