Generally if you click on the green triangle it will tell you what the error is.

If your data is not sorting correctly, could be that what looks like numbers is
actually text.

Format as General then copy an empty cell.

Select the data and Paste SpecialAddOKEsc


Gord Dibben MS Excel MVP

On Mon, 7 Aug 2006 17:04:01 -0700, Ben Milam <Ben
wrote:



"Bryan Hessey" wrote:


You have an option selected in Tools, Options Settings, to 'enable
background error checking'

This attempts to let you know of suspect items as listed.

Untick this box to remove the checking


--
Bryan Hessey
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What causes the triangle? It causes problems in sorting as Excel does not recognize the contents as intended.
Ben Milam