Adaptive Case Management (ACM) has emerged as a key BPM technology for supporting unstructured business process, and has been used to support flexible services orchestration. A key problem in ACM is that case schemas need to be changed to best fit the case at hand. Such changes are ad-hoc, and may result in schemas that do not reflect the intended logic or properties. This paper presents a formal approach for reasoning about which properties of a case schema are preserved after a modification, and describes change operations that are guaranteed to preserve certain properties. The Case Management model used here is a variant of the Guard-Stage-Milestone model for declarative business artifacts. Applicability is illustrated using a real-life example.
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