User-1174608757 posted
Hi JagjitSingh,
According to your description,It depends on the Tablix or List which you are using to display the data. Normally Report Size & Width would be 8.5X11. If the Tablix or list width is increasing more than 8.5 inchs, then the report will span in 2 pages.
First check Tablix width, if it is less than 8.5, then adjust Report Properties->Page Setup->Left 0.15 in,right:0.15 in,Top 0 in, Bottom 0in. If it is more than 8.5 inches, then try to adjust and start the Tablix from 0in location, and start each control
in Report from 0 location.
https://social.msdn.microsoft.com/Forums/sqlserver/en-US/da49d55e-d189-4f28-a89e-a94288a5f85b/ssrs-2008-report-export-to-pdf-cannot-get-size-to-work?forum=sqlreportingservices
Best Regards
Wei Zhang