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 Excel all day—the simple Ctrl+1 shortcut does 80% of the work
Ctrl+1 streamlines the Excel workflow, efficiently handling most of my day-to-day and advanced formatting needs. Universal control: Ctrl+1 works on cells, charts, and shapes, offering a single, ...
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