Comment by nikhilgk

A few years ago, we were building somethings to integrate with multiple expense and invoice management systems. Concur's odata based APIs were by far one of the worst integration experiences I had. (Even worse than integrating with dot net SOAP APIs from AXIS and Java) You could see that some of the older APIs were well documented and thought out and the new versions were considerably worse. What we realized was that the earlier versions were built prior to SAP acquiring Concur.