Tax with FB60 message DFTAX025

Hello,

I did the invoice without tax, after, when I execute the transaction FB60 to account the tax , knowing that we have SAP ERP6.

I did my simulation the system show (figure 3), When I save the system show (figure4), and i double clic at the message of ( figure4) the systeme show me ( figure 5).

Please help me.

I do my simulation the system show me

When I save the system show me

I double clique at the message the system show me

Figure 5

Please help me.

Omar.