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Common SPLA Reporting Errors

Most SPLA findings trace to a handful of repeatable reporting errors that compound across a 36 month lookback. Here are the common ones and how to find them in your own record first.

Published September 10, 2025Updated February 6, 2026Independent buyer side analysis · About a 8 minute minute read

Most SPLA findings do not come from bad faith. They come from a handful of repeatable reporting errors that compound quietly across a 36 month lookback. Know the common ones and you can find them in your own record before the auditor does, when correcting them is still cheap.

Why small errors become large findings

SPLA is verified for every monthly cycle, not just your current position. An error that repeats each month is multiplied by the number of months it ran, then exposed to back fees at the price file rate and a penalty uplift of 25 to 125 percent. A minor monthly miscount becomes a meaningful settlement when an auditor traces it across three years. That is why the cheapest fix is the early one, caught in your own review rather than the auditor's.

The expensive errors are the consistent ones. A single bad month is noise. The same misapplied rule every month is a pattern, and patterns are what auditors price.

The errors we see most often

Across the SPLA audits we have defended, the same issues recur. Check your record against each.

  • Misapplied SPUR, where a product is reported on the wrong basis, for example by user when the deployment should be counted by core
  • Unreported non production systems that quietly run full Microsoft software and serve, or could serve, external workloads
  • Missing or late monthly SAL reports, leaving gaps the auditor fills with its own estimate
  • SAL counts asserted without sealed daily authentication evidence behind them
  • Customer mapping that cannot tie a reported block to the customers actually served that month
  • Version and edition drift, where the reported edition no longer matches what was deployed after an upgrade
  • Over reporting, where caution leads to paying for licences never needed, wasting margin every cycle

A worked view of how an error compounds

The figures are indicative and show the mechanism, not a quote.

ErrorMonthly effectEffect across the lookback
Misapplied SPUR basisSmall monthly undercountMultiplied by every month it ran, plus uplift
Unreported non productionHidden deploymentBack fee on each month, uplift for the pattern
Over reportingMargin paid away each monthCumulative waste, recoverable going forward

How to find your own errors first

  1. Reconcile report against deploymentFor each month, confirm what you reported matches what was deployed, and log every variance with its cause.
  2. Test the SPUR basis per productConfirm each product is counted on the correct basis under the current Services Provider Use Rights, not the basis it inherited years ago.
  3. Evidence every SAL figureTie each count to a sealed daily authentication source. Anything you cannot evidence is a risk to close now.
  4. Correct in good faith, on the recordFix what you find in the next cycle and document it, so an honest correction becomes part of your defense rather than a finding.

The next step

The common SPLA errors are findable and fixable, but only while the window to correct is still open. If you want a clear read on where your record is exposed, get a quote and we will review your reporting against the patterns auditors look for. Our SPLA audit defense guide sets out the standard, and the related articles below cover reporting discipline and the compliance register.

Related reading

When the exposure is real, we build that monthly evidence trail through our SPLA reporting discipline work.

Worried about your record?

Get a quote and we will review your SPLA reporting against the error patterns auditors look for. Fixed Fee from $18,000 or Gainshare, both backed by our guarantee.

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