Manage Tax not generate TAX for specific Charge Account

Manage Tax is not generating TAX for specific Charge Account

Hi All

I have a big issue on Purchasing, I have created a Standard Purchase Order from purchase requisition, the purchase order is created correctly but is not generating TAX for specific Charge Account (431.26.12450.2000.0.10.0), but if I change this account, the TAX is calculated.

I have reviewed the Tax and Reporting options for our supplier and is has difined the Calculate Tax option like 'Yes'

The Charge Account is active.

Some suggestion for resolve this issue?

Regards.