Multiple Withholding tax in one document

Hello All,

The issue is related to WHT tax data.

Suppose there are 3 line items,

L1 - WHT Code XX

L2 - WHT Code XX

L3 - WHT Code XY

Here system only caluculate WHT code of L1 and L2 and Ignores L3 WHT in calculation.

XY is defined, as when I use only XY in all 3 line item system calculate tax.

Is it even possible to define two different WHT code in one Invoice doc?