Seventy-Four Must-Haves and a Date Nobody Chose
A regulatory filing date fixes go-live at 30 September, nine months away. The programme has a fixed envelope of 2.4 million and 11 people, two of whom are the only people who understand the pricing engine; both are committed to another programme at 30% availability until June. Requirements elicitation produced 210 items, and a MoSCoW session labelled 74 as 'must', although 31 of those were self-declared by the sales director. The estimate was built by analogy to a 2022 project that finished 40% over budget, and the team has already anchored on the 2.4 million figure in the business case. A stakeholder review found that the data protection officer and the external auditor were never mapped, yet both must sign off the design. The sponsor wants a single committed date and cost at Thursday's board.
1. How do you deal with the 74 'must-have' requirements before anything else?
Read the worked answer
74 must-haves out of 210 means the prioritisation has not happened. 'Must' has become a word for 'I want it', and the label no longer discriminates.
What to do
- Re-run prioritisation with a consequence-based test rather than a vote. For each item ask: what specifically happens if we go live without it - regulatory breach, control failure, revenue stop, or inconvenience? Only the first three categories earn 'must'.
- Separate the sources. 31 self-declared by the sales director signals stake, not necessity; validate those against requirements owned by compliance, the DPO and the auditor.
- Use cost of delay where it can be quantified, so trade-offs are compared rather than settled by seniority.
- Test the set against capacity. If the must-have set exceeds what 11 people can deliver in nine months at 30% SME availability, the plan is arithmetically impossible and the conversation is about scope, date or cost - not effort.
- Make the three-way constraint explicit: date fixed by filing, envelope fixed at 2.4 million, scope claimed at 74 musts. At most two can hold. Ask the sponsor which one moves.
- Record the decisions and who made them.
A must-have list that survives a real challenge is much smaller, and that smaller list is what any credible plan should be built on.
2. How do you rebuild the estimate so it can survive scrutiny on Thursday?
Read the worked answer
Rebuild it so it can survive scrutiny, and stop giving single numbers.
- Treat the 2022 comparator as evidence, not as a template. A project that ran 40% over on a similar profile tells you the base estimate is optimistic by construction. The reference-class adjustment - an uplift, or better, a distribution of comparable outcomes - is the starting point, not an embarrassment.
- Remove the anchor. The 2.4 million in the business case is a constraint, not an estimate. Deriving effort to fit it inverts the logic. Estimate bottom-up for the reduced must-have set with explicit productivity assumptions, then compare with the envelope and show the gap.
- Use three points per major work package and aggregate. Express the result as a range with a probability of completing by 30 September. '2.4 million at 100% confidence' is not an available answer; '2.7 million at 70% confidence' is.
- Model the SME constraint explicitly. Pricing-engine work cannot start in earnest before June, so it is on the critical path and sets the floor on the date. Show the schedule with and without a backfill or contractor.
- State assumptions and dependencies as dated items with owners. DPO and auditor design sign-off lead times are now plan dependencies, not footnotes.
- Give the sponsor a decision-ready paper: options to cut scope, add resource to hold the date, or accept a later date - each with cost, risk and confidence.
That converts an argument about numbers into a choice between outcomes, which is the only form in which a board can decide.
3. What is the significance of the data protection officer and external auditor being unmapped, and what do you do this week?
Read the worked answer
The gap matters because both sit on a sign-off path, not at the periphery.
- Re-map. The DPO is high power and high interest once data flows are in scope - close engagement. The external auditor is high power and low interest until an audit window forces attention, so the strategy is scheduled, evidence-based briefings rather than enthusiasm.
- Consequence. Both were absent from design, so their requirements arrive late. Late requirements from a sign-off authority are not scope creep to be resisted; they are rework to be planned. Quantify the exposure - changes touching data retention, audit trails and access control tend to be the expensive ones - and add review gates to the schedule.
- This week. Brief both before Thursday, add them to the governance terms of reference with named sign-off points, and put their lead times into the critical path. Auditors rarely respond in days, and that latency is a schedule fact.
- Tell the sponsor plainly that a plan without these two gates is not deliverable, and that the missing stakeholders, not the estimate, are the likeliest source of the next overrun.
- Record it in the risk register with an owner and a trigger date.
The judgement: stakeholder analysis is not a diagram exercise. An unmapped sign-off authority is a schedule risk with a name.