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Then select the fields for the grid, it is wrongfullt wrongfully named “Index Field Editor”.
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In Object Master Maintenance the Grid object should be visible now:
Generate Viewer
On question “Product module” select your created module.
On question “Viewer name” write the name according to the naming convention from:
On question “Source entity” select your entity
Then select the fields for the viewer, it is wrongfully named “Index Field Editor”.
It then should generate code unless you made mistakes, select NO on the next dialog.