F-30: posting with clearing a document with special G/L indicator and tax

Hi All,

by t.code F-02 I've posted a document with the follow items:

PK SG Account Description

40 Bank G/L Account u20AC 1200,00

19 A Customer code u20AC 1000,00- (1000,00 amount and 200,00 tax amount)

50 Tax G/L Account u20AC 200,00-

If I launch the t.code F-30 (post with clearing), choose that customer and select the special G/L indicator "A", SAP displays

the document I've posted with an amount equal to 1.200,00- instead of 1000,00.

This does't allow me to clear the open Item....

Could anyone hel me?

Thanks

Gandalf