That means formulas in cells in the same region of the sheet are different.
It's just Excel trying to be helpful. For example:

A1 formula: =SUM(B1:J1)
A2 formula: =SQRT(Y100)

You can probably ignore that message. To turn off those messages goto the
menu ToolsOptionsError Checking tabRules. Uncheck the items you don't
want to see messages for. I have all of the error checking rule settings
turned off.

--
Biff
Microsoft Excel MVP


"Eric" wrote in message
...
Please advise what causes inconsistent formula in region in Excel?
How to resolve when it occurs?
Or to prevent it?