Use VLOOKUP or INDEX/MATCH

Use VLOOKUP or INDEX/MATCH in Microsoft Excel — with the four heights of help laid out: do it now, make it easier for the next person to accept, work out the right move when you are stuck, and learn the pattern so it stops coming back.

4prompt heights
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The four heights

The same task, four distances: today's deadline, the next reviewer, the stuck moment, the pattern.

Execute — do the immediate task

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Match a 3,200-row expense file to our cost center rates on the sheet CostRates using a robust…
Match a 3,200-row expense file to our cost center rates on the sheet CostRates using a robust lookup so every matched row shows the correct rate. Use an INDEX/MATCH solution that tolerates vendor codes stored as numbers in one sheet and text in the other. Put the matched rate into a new column called AppliedRate on the sheet Expenses, and highlight any rows where no match was found so finance can investigate before month-end close. Ladder":"L1"

Improve — make it easier to accept

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Before I send the matched file to budgeting, make approvals simple: surface the top five expense…
Before I send the matched file to budgeting, make approvals simple: surface the top five expense categories with the largest applied-rate variance, make the AppliedRate column obvious, and mark rows where the vendor code format differs between Expenses and CostRates. Suggest a fallback formula for near matches (e.g., trim leading zeros) and list the specific rows a reviewer should check. Ladder":"L2"

Decide — diagnose the stuck moment

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I ran my lookup to apply cost rates and hundreds of rows return #N/A even though the vendor codes…

My lookup returns #N/A for many rows

I ran my lookup to apply cost rates and hundreds of rows return #N/A even though the vendor codes look identical. The budget owner will hold up sign-off if this isn’t resolved. I don’t know whether the mismatch is whitespace, numeric/text types, or alternate codes in the source system. What should I check in order, and what is the best quick fix that preserves auditability? Ladder":"L5"

Become — change the pattern

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Each close I lose time reworking lookups: different systems export vendor codes as text, numbers,…

We repeatedly rework failed lookups before close

Each close I lose time reworking lookups: different systems export vendor codes as text, numbers, or padded codes, and we end up hand-fixing hundreds of rows. Which process changes or small automation can stop this recurring firefight so lookups succeed first time? Give three practical changes I can implement with minimal IT help. Ladder":"L6"

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Other spreadsheet work people do in Microsoft Excel.

Every task here came from the work, not from a feature list — which is why the prompts name what you want done and never the button that does it. The tool changes; the work does not.
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The rest of the map

Same library, five ways in.