Asuccessful introduction of a system, in any organisation, puts demands on the development processandtrueuser participationinthisprocess. Littlefocushavebeenput on users' experienceof satisfactionthat participationgivesthem. Further, almost noresearchhas studiedhowthefeelingof sensemakinginfluences andmotivates participationinopendesign processes. Thispaper putsemphasisontheexperienceof satisfactionthat isperceivedthrough activeparticipationandpresentstheprinciplesandvocabularyof theories onparticipationand sensemaking, includingrelatedconceptssuchasreflection-in-action, knowledgeproduction, and satisfaction. Brought together, theseconceptsserveasthetheoretical frameworkforapproachinga qualitative case study to be performed in a work in progress.