In this model, the organization completely moves its AP and AR functions, from receipt through to posting, to a shared services center. Whether the center is in house or outsourced, moving all AP and AR functions to another location or organization can lead to a lack of control over cash flow. Staff in these service centers may lack expertise and knowledge of the business and are therefore unable to address exceptions or are fundamentally unresponsive to organizational change. A lack of visibility into the invoice process flow, with little or no insight into the receipt/posting process can lead to problems when critical invoices are not addressed in a timely manner. Furthermore, when inefficient processes are moved to the service center or when there are technical issues, such as a difference in systems used by the processing center and the organization, can cause unnecessary problems and delays.