J1IIN should be blocked if the billing document is parked for the sales invoice

Hi friends,

We have enabled the parking & posting of the sales billing documents for particular order types. Once VF01 is posted, the accounting document is not generated.

But the system allows the J1IIN for direct sale & J1IJ for depot invoice.

I want to block this, pls let me know the steps for blocking !!!

Regards,

Karthik Guna.