I know how to modify a 'physical' report with a defined name, and called from a button. But, in Axapta there are some reports called from the print button in the toolbar. How can one modify a system report like 'sysreportauto'?
The fields shown in the auto report comes from the AutoReport field group on the table.
You can, as a user, change the auto report, by clicking Edit\New, then choose the fields you would like to see.
You can also specify group totals in Select\Sorting, and grand totals in Select\Print options.