“…Electronic entry systems are convenient for data systems and utility (Hoerbst & Ammenwerth, 2010; McQuaida et al, 2010). The data systems include information about adverse event reporting (Chen, 2011a, 2011b, 2011c, 2011d, 2011e, 2011f, 2011g, 2011h, 2011i, 2011j), patient management utilities (Shih, 2010a, 2010b, 2010c, 2011a, 2011b, 2011c, 2011d, 22011e, 2011f, 2011g), invoice generation (Chen, 2012a, 2012b, 2012c, 2012d, 2012e, 2012f, 2012g, 2012h, 2012i), safety monitoring, and so on. Implementation of e‐invoicing helps to convert the whole supply chain to electronic form and could decrease the operational cost of the total task.…”