Dear Suganth
a.) may be check OSS (SAP Marketplace)
b.) use "debug" mode to get an idea of the issue (only on one specification) : is it an "expert" issue or a "SAP" issue (calculation is done on "Expert Server" but data goes back to SAP and is stored there (as far as I know) via standard BAPIs/APIs
c.) do you use current "EHS Expert Server" version?
The handling of "data" driven values and "floating" driven values is not an easy task in IT systems.
Can you execute some additional experiments? Can you try to use e,.g. "-31.99"? It could be of interest if "expert" is always" rounding result to next integer value and if so in which direction
(e.g. in your example: - 31.9 is "getting -32; -32.1 is getting -32). So in the first example it i a "round" up (but physically it is a "round down" (next near integer) ; so -32.1 is rounded "down) (next integer is 32) (physically it is a round "up")
C.B.