The accounting of the Deutsche Bahn Group, a public German railway company with 320,000 employees, went through a centralization process to transfer the entire company’s accounting activities from 350 locations to three shared service centers. In the course of the transformation, processes had to be changed on a global level and a workflow management system was needed in order to automate these processes. The project, Global Accounting Shared Service Center (GASSC) started in 2015, choosing TIM, a workflow management system specialized on human workflows, as one main pillar out of several digital tools that were introduced simultaneously to make this transition possible. A workflowdriven approach was required to efficiently handle all accounting requests and communication efforts, while considering legal and compliance requirements at the same time. The subproject of the GASSC project, for which the TIM product was chosen, was named SeMa – Service Management. The organizational desire for further automation led to efforts to combine the workflow with existing thirdparty systems to meet regulatory requirements, faster turnaround time goals and to realize performance monitoring at a global scale. This was realized by partly using robotic process automation in combination with human workflows. The SeMa project was honored with the “Process Solution Award 2019” in the category of workflow management by the renowned gfo organization in Germany.