How to handle withholding tax for some AP invoice lines?

Summary:

How to handle withholding tax for some AP invoice lines?

Content (please ensure you mask any confidential information):

Hi Tax Guru,

Would appreciate your input on following withholding tax cases. Our withholding tax was configured successfully and working for the total invoice amount. Now we run into one issue and sound system needs to update the setup.

Case Steps

1 Our user creates an AP invoice with two items lines and I setup tax rules and the withholding calculated successfully for the total invoice amount, however now the user said that he wants to calculate the withholding for only one line instead of the two lines.