Three common Excel errors tell different stories. #SPILL! means a dynamic formula cannot expand into its required range. #REF! means a formula points to a location that is no longer valid.
Three common Excel errors tell different stories. #SPILL! means a dynamic formula cannot expand into its required range. #REF! means a formula points to a location that is no longer valid. #N/A usually means a lookup found no match, but does not reveal whether the cause is a missing source, format, space, or bad identifier.
Do not begin with IFERROR that turns everything into zero. Find the first cell creating the error and keep a copy of the data. For #SPILL!, check for filled cells, a table, or merged cells blocking the range. For #REF!, locate the deleted column or sheet and repair the reference. For #N/A, inspect both sides of the identifier for trimming, text versus number format, and unmatched values.
After repair, add a business check: count customers without prices, the value of unmatched rows, and whether the formula removes or adds records. Keep errors visible in an exceptions report; only a known and expected value should be handled deliberately.
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Yehonatan Saadia
Freelance automation, web & MVP developer
I'm Yehonatan Saadia, a senior developer who builds business automation, custom websites, and MVPs for small and mid-sized companies across the US, Europe, and Israel. These guides come from real client work, not theory.
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