In accordance with a method of managing work flow, tasks associated with a telecommunications service order from a plurality of worklists of computing source systems are merged into a merged worklist. Each computing source system maintains a respective worklist that includes a task associated with the service order. The tasks of the service order in the merged worklist are prioritized into a prioritized sequence to be completed on a work-when-ready basis. An error in completion of a task associated with a worklist of a source system is detected and a new task to correct the detected error is generated. Further, the worklist of the source system associated with the detected error is updated with the new task and the new task is integrated into a proper position of the prioritized sequence in the merged worklist in accordance with the work-when-ready basis.