People enacting processes deviate from the process definition for a variety of different reasons, the consequences of which may be either positive or negative. Detecting deviations “on the fly” provides an opportunity to determine the precise point in the process where the deviation occurred plus a faster and more accurate diagnosis of any issues or problems and their rectification. We present a framework designed to detect deviations in enacting process “on the fly” consisting of a definition engine in which boundary values and process constraints are set, a monitoring engine which observes and records the process during enactment and a detection engine which compares reference values against actual values as they are recorded. The methods used are related to some of the work previously conducted in the process improvement and deviation detection domain, and brings these concepts together with our own ideas as a software tool. The developed model is tested with a simulated pr...