The document is not relevant for invoice lists

Hi SD Experts,

When i am creating invoice list (T.Code:VF21),I got the error that"the document is not relevant for invoice lists". i entered invoice list type per billing document type (transaction OVV7).

I already did those settings in the IMg. But still its not working, i really appericiated that you look into the query.

Please advise.

Thanks

Tulasi