Free sample chapter
Chapter 3: controls, PO and contract
The complete chapter from the Starter Kit guide. It shows why a healthy PO compliance figure can hide weak control, and the one-invoice trap that changes a sourcing recommendation.
Download Chapter 3 (PDF, 7 pages)
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What is inside
- The four different things people mean by "PO compliance", and which one your data can show.
- Spend-weighted versus count-based compliance, by department.
- The PO by contract control matrix, with an owner for each box.
- Two arithmetic traps with overlapping flags.
- Off-contract (maverick) spend defined properly, and the single invoice behind 29.81% of it.
- Exercises to try. The worked answers are in the full kit.
Free KPI cheat sheet (PDF, 1 page)
14 procurement KPIs with the formula, the sample value and the common mistake.
Want rows to practise on? Download the free 15-invoice CSV preview.
Want the rest?
The full kit has 12 chapters, the dataset, a self-checking workbook, the build guide, the answer key and the prompt library.
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