Hi Anyelini,
One way of doing this make an extension of standard IDoc. In this extension, make segment E1WBB07 as a mandatory segment. I think with this, if the mandatory segment is missing, system will not generate E1WBB01 segment. You can take help of your ABAPer to do this.
Please note, the extension you are creating above must be mentioned in store's partner profile (WE20) and ensure, the WBBDLD IDoc is used with this extension.
I hope this will help.
Regards,
Amit