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As the collaboration between companies is facilitated in e-business environment, inter-organizational workflow management becomes an important issue. Because the inter-organizational workflow consists of autonomous organizational workflow, the coordination of these autonomous processes is required. In this paper, a local viewed inter-organizational workflow model is proposed, in which an inter-organizational workflow is defined as a set of block activities. Exception handling rules for internal process are defined with pertinent block activities. Based on the suggested model, a multi-agent system and a coordination algorithm are proposed. For the illustration of the suggested model, an example interorganizational workflow about book order process is presented.