This past week I encountered a problem that I was at my wits end to solve. The problems was this: Randomly, a process wouldn't work. The same code was getting executed by the press of a button, but sometimes it just wouldn't work. Was something wrong with the engine in the Cloud since it always worked in local testing?  After a brief discussion with a few members of Mendix’s own Success Team, we were able to find the root cause and redesign to care for the issue. Read on and hopefully I'll save you from some similar headaches.