Limit of the amount of rows and columns in a worksheet.

Hi,
May be the limit of the amount of rows and columns in a worksheet is responsible for the problems I'm having now. In our webstore, there are software, gadgets, magazines and more contents that I wanted to shift, but error message appears (see image below).
So how can I get rid of this problem? Please suggests what solution can be done to fix this. Thanks.
Microsoft Excel
To prevent possible data loss, Microsoft Office Excel cannot shift nonblank cells off the worksheet
Try to locate the last nonblank cell by pressing CTRL + END, and delete or clear all in the last cells between the last call and end of your data. Then select cell A1 and save your workbook to resel the last cell used.
Or you can move the data to a new location and try again.
Ok
