RE: Page Extension Add new field to Sales Line grid
As the others above have said, you need to add a page extension after creating the table extension.
Example code for the Sales Quote Subform page:
pageextension 90132 SalesQuoteExtension extends "Sales Quote Subform"
{
layout
{
addafter("Location Code")
{
field("NEW FIELD NAME"; rec."NEW TABLE FIELD")
{
ApplicationArea = All;
}
}
}