You will get an error if Flash Fill cannot find the pattern. The first thing to check is that you're using Flash Fill close to the source data (e.g., in the adjacent cell). For instance, it won't work ...
How-To Geek on MSN
I use these 3 Excel formulas to automate my boring chores
Life is hectic, and juggling dozens of apps for the "must-do" chores adds to the noise. Since I already work in Excel daily, ...
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