How to Change the Rounding Residual Threshold (0.0005) for Quantity Field

Currently it already circular up from 0.0005 to 0.0009 = 0.001. We privation each magnitude with much than 4 decimal constituent issues besides circular up to 0.001. This affects rounding residuals and origin inconsistencies. Once this is solved idiosyncratic volition not spot mistake connection "Qty indispensable beryllium larger than 0" struck successful MES/COGI. 

Current Logic Example     

0.0005 = 0.001

0.0004 = 0 (SAP Converts to zero)

We request Logic   

0.0005 = 0.001

0.0004 = 0.001 (Do not person to zero)

Should one make customized function?

Note that we cannot instrumentality OSS and Define Rounding Profiles successful SPRO due to the fact that it volition impact each MM and PP modules. We lone request to instrumentality connected 1 tract and 1 interface.