Abstract: An approach is provided for generating process flow documentation. Headings and subheadings are identified in multiple system documents specifying actions required to be taken in response to service requests, which are specified by process flows. A portion of a system document included in the multiple system documents is mapped to a process block of a process flow included in the process flows. The portion is specified by a heading or subheading in the system document. The mapping is based on a similarity score indicating an amount of similarity between (i) the heading or subheading and (ii) a name of the process block, or based on a matching of the portion of the system document to the process block by a semantic understanding of the portion provided by a machine learning system.