When you copy an Excel spreadsheet (I'm assuming it's a spreadsheet) to the clipboard and then paste it into your drawing. Excel uses a Metafile, or Picture, format. Microsoft Excel restricts the size of its metafiles to 12.5" across and down.
Simplest way is to reduce the height of the rows and/or widths of the columns so the range cells will fit within the 12.5" limitation. Also try using a smaller font size.
Another option is to use the PASTESPEC command (choose EDIT>PASTE SPECIAL) and paste the excel worksheet as an Image Entity.
Hope this helps.