CPSM Exam 1 common mistakes
CPSM Exam 1 · Understand the traps and how to avoid them.
Awards to the lowest quoted unit price and then reports the gap versus the incumbent as 'savings,' without loading freight, duties, packaging, inspection, payment-term financing, or field-failure/warranty cost into the comparison.
The quoted price is the only number that appears side-by-side in the bid tab, while landed-cost and lifecycle data sit in logistics, AP, and quality systems that the buyer may not pull. The bid tab becomes the decision document by default.
What to do instead
Build a standard landed-cost/TCO template with named buckets (unit price, freight, duty/tariff, handling, inspection, inventory carrying, quality/warranty, disposal) and require every supplier to quote against those same lines. No award recommendation is signed until the TCO sheet, not the price sheet, carries the approval.
Uses 'should-cost' and 'market price' as interchangeable terms, or builds a should-cost model that folds labor burden, SG&A, and profit into one blanket percentage applied to material.
Should-cost requires a bottom-up build the buyer often cannot get data for, so it is easier to reverse-engineer a percentage onto the incumbent's price and call it analysis. The output then just confirms the current price.
What to do instead
Separate the two explicitly: market price comes from benchmarking/price indices and sets the ceiling; should-cost is built bottom-up in discrete buckets (net material, direct labor, burden, scrap/yield, packaging, SG&A, profit) and sets the target. Validate the model's assumptions with the supplier's open-book data or a cost breakdown request before using it in negotiation.
Reports cost avoidance (a price increase that was prevented, or a demand that was never purchased) in the same savings total as hard cost reduction, and negotiates concessions on unit price while conceding on volume, payment terms, or scope without valuing those trades.
Savings targets and stakeholder dashboards reward a single big number, and unit price is the easiest concession to measure, so trades in other dimensions get made silently.
What to do instead
Maintain two separate ledgers with written definitions and a frozen baseline: hard savings (validated against actual invoices/POs) versus cost avoidance (validated against a documented would-have-been price). For every concession beyond unit price, convert it to a currency value before agreeing, so the trade is visible on the negotiation plan.
Selects firm-fixed-price for a scope that is still poorly defined 'to transfer risk to the supplier,' then absorbs the risk back through change orders, claims, and schedule slippage.
Risk transfer feels like a free win in the award decision, and FFP looks like the most disciplined commercial structure. The cost of the transferred contingency only reappears after the fact.
What to do instead
Match the contract type to scope maturity: FFP only where the SOW and specifications are firm and complete; fixed-price-incentive or T&M with a not-to-exceed ceiling where scope is developing; cost-reimbursable where the buyer genuinely owns the uncertainty. Document the reasoning in the award file so change orders later are measured against a stated risk allocation.
Issues a PO with the buyer's terms, accepts a supplier acknowledgment form containing materially different terms (payment, warranty, liability caps, delivery), and assumes the buyer's PO terms govern because they were sent first.
The forms are treated as paperwork between the 'real' agreement, and the terms-and-conditions review is skipped when the price and delivery look right.
What to do instead
Apply the battle-of-forms rule deliberately: terms must be expressly agreed, not assumed by sequence. Require supplier signature on the buyer's terms, or negotiate a master agreement whose terms control all call-offs; flag every acknowledgment that alters terms as an exception requiring legal/commercial review before the order is released.
Applies one sourcing method - usually a three-bid RFQ - to the entire spend portfolio regardless of item characteristics, and treats 'we ran a competitive bid' as the whole sourcing strategy.
Competitive bidding is the default process most organizations have templates and audit trails for; segmenting spend takes data work and judgment that the process does not force.
What to do instead
Segment the spend first (e.g., Kraljic supply/risk matrix, or spend cube by value and supply-market risk) and then choose the method per segment: competitive bidding for leverage items, partnership/strategic negotiation for strategic items, secure supply and qualify alternates for bottleneck items, and simplified/e-catalog purchasing for routine items. The sourcing plan must name the segment and justify the method chosen.
Awards a strategic or bottleneck item to a single source with no documented exit plan, or the mirror error - dual-sources an item purely for 'risk' without checking whether the volume split destroys leverage and duplicates fixed costs.
Single source is rationalized by volume leverage and relationship depth, while dual sourcing is rationalized by the word 'risk,' and neither decision gets a quantified comparison.
What to do instead
For each critical item, document a supply-continuity assessment: alternate/qualified sources, tooling ownership, lead-time buffer, contractual exit and transition rights. Then quantify the cost of dual sourcing (lost volume leverage, duplicated setup, qualification cost) against the quantified risk reduction, and record the trade-off in the award rationale.
Treats a supplier's ISO 9001 certificate as proof that the specific part or service conforms, or treats an AQL sampling plan as a guarantee that no defect will reach the line.
A certificate is a clean, checkable document that satisfies a supplier-qualification checkbox, while true product conformance requires part-specific evidence the buyer must ask for.
What to do instead
Separate QMS registration (process capability evidence) from product qualification (first-article/PPAP, control plan, Cpk/Ppk on critical characteristics, material certs, and inspection records for the actual part). State explicitly in the quality plan that sampling accepts a defined risk level and specify the AQL, sample size, and reaction plan for rejects.
Sets evaluation criteria and weights after proposals are opened, or averages supplier scores across criteria as if all criteria were equally important.
Teams want to see what the market offers before committing to weights, and unweighted averages are the easiest calculation in a spreadsheet.
What to do instead
Publish the weighted criteria, scoring rubric, and weight set in the RFP before release, and lock them. Score each criterion against defined anchors (e.g., 1–5 with descriptors), use independent scoring then consensus, and show the weighted total plus any pass/fail gates (mandatory requirements) separately - never let a strong technical score mask a failed mandatory criterion.
Evaluates a gift, hospitality offer, or relationship conflict by asking 'did it actually change my decision?' rather than 'would a reasonable third party perceive favoritism?' - and continues to manage the category without disclosure or recusal.
Buyers know their own integrity and use intent as the test, which almost never triggers a disclosure; the appearance standard feels like an accusation.
What to do instead
Apply the perception test and the written policy thresholds: disclose any gift, hospitality, outside interest, or prior employment relationship in the conflict-of-interest register, refuse or record anything above the policy limit, and recuse from the award decision where a reasonable observer could question impartiality. When in doubt, disclose and let the ethics/compliance function decide.