Hi Senthil,
Are you setting the Rounding property to false?
Description
Sets or returns a valid value of BoYesNoEnum type that specifies whether or not to round the total amount in sales or purchase documents.
Field name: Rounding.
Property type
Read-write property
Syntax
Visual Basic
Public Property Rounding() As BoYesNoEnum
Remarks
Relevant to sales and purchase documents only.
See Also
Documents Object
Best regards,
Pedro Magueija