I am using Microsoft Excel 2007.

My spreadsheet has two tabs, Sheet1 and Sheet2.

In Sheet2 I have the following formula going down Col. A linking to
data on Sheet1:

='Sheet1'!A15
='Sheet1'!A16
etc. etc.

But if I delete some rows on Sheet1, then the formula on Sheet2 becomes:

='Sheet1'!#REF!

What do I need to do so that the dreaded #REF! does not happen when I
delete rown on Sheet1?
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tb