Resolution 1: Manually enter the line items.
Resolution 2: Close the screen and reopen after you paste and save the data and then input the lot number again.
Resolution 3: Use transaction import to bring in the detail lines.
Resolution 4: Add the following VBA code as a customization:
Private Sub Spread1_LineGotFocus(maintflg As Integer, retval As Integer)
Dim thebatnbr As String
thebatnbr = GetObjectValue("cBatNbrh")
If Trim$(thebatnbr) = "" Then
Article ID: 2950081 - Last Review: 3 Feb 2017 - Revision: 2