"I'm really really good at #debugging" a #sap #abap developer friend once said to me. I replied "oh thats awful". Why? Because it means he spent a lot of time finding bugs in code that was probably not covered by tests. But how do you debug efficiently? (1) Many people use breaks points, watchpoints, breakpoints on messages, exceptions, post mortems, job debugging, etc and are successful that way. But at some point you have to "look at code". Over the years I've seen a few repeating patterns: (2)