“…The e‐invoice plays a vital role in tracking the movement of cash and information in the business world. 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.…”