Sale consider- As per invoice or as per shipping bill

please advise on below points;
1. Date of sale to be considered -as per Tax invoice or as per shipping bill
2. Amount of sale to be considered -as per Tax invoice or as per shipping bill


because as per GST rules, date of ex-factory is date of sale but to match the data on custom portal and GST portal, we have to consider the details as per shipping bill to avoid any Mismatch and amount is being put on hold.

there is always difference in amount as per Tax invoice and amount as per shipping bill. so which amount should be considered in books??