Tracking Labor transaction in debrief for cost calculations

 I saw couple of documents on the supports website but did not get a clear answer about if "field service debrief process tracks labor cost anywhere?" Customer requirement is to see labor costs and material cost to analyze against the warranty repairs.

(1) How To Track Expense And Labor Costs If Product Is Under Warranty? (Doc ID 1498221.1)

(2) How to track the accounting entries that should take place when the debrief information is saved? 

What are the accounting triggers and the relevant form?

thanks

PJ