RV45A - ETDAT
In which SAP table i can find files ETDAT (Delivery Schedule date or First date))for structure RV45A.
EDATU in VBEP is nothing but ETDAT.
To cross check, open a sale order and go to the schedule lines at item level.Check the delivery date column Field name (Which is (ETDAT).
This ETDAT gets hit into VBEP as EDATU.
To check, pass the same order number to VBEP and check the delivery date in the table.