THE XML is rounding off not by header logic but by line-by-line logic causing discrepancy in final output when the tax amounts are extended to more than 2 decimal points.

For example:

System

2,894.358675

1,832.449500

12,149.175000

16,875.983175

XML

1832.45

12149.18

2894.36

16,875.99

KINDLY CHECK THE MATHEMATICAL ROUNDING LOGIC TO BE BASED ON HEADER ROUNDOFF RATHER THAN LINE BY LINE