Most of the times when we start working with new clients and are being asked to update their systems with new requirements. We start looking into which version of AX is installed? what is the build version ? Have any hotfixes installed on it or have any one installed any rollup or commulative update in the system. Many a times response from clients is "We really don't about it!". Below link can help you to find out answers of these questions yourself quickly; http://blogs.msdn.com/b/axsupport/archive/2012/03/29/overview-of-ax-build-numbers.aspx
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