Reference table which maps CustPackingSlipJour and CustInvoiceJour table

Dear all,

Is there a table which store reference link information between CustPackingSlipJour and CustInvoiceJour? I know when we do posting invoice, we can choose quantity 'All' or 'Picked' and not necessarily 'Packing slip'. But in my case, all posting invoice must be done after posting packing slip. So, back to my question, is there a table which store packing slip id information for invoice id? Thanks

Regards,

Jefry