| Signal137 | Whether to publish a specific emissions figure in a report or a bid | A defined boundary, each component labelled measured, modelled, or estimated | A figure that survives a direct question about how it was built |
| Signal137 | Where should the reporting boundary sit? | An explicit scope statement: venue only, full lifecycle, or visitor travel included | The boundary matches the claim being made |
| Signal137 | Is the offset or reduction programme delivering what it claims? | A before-and-after comparison against a stated counterfactual | A verifiable change reported, not an assumed one |
| Signal137 | How do we meet a funder's or host's disclosure condition? | A comparable, traceable format the funder can check line by line | Funding and hosting eligibility kept, on a claim that holds up |
| Signal137 | Does this cover visitor travel, or only the venue? | Visitor travel modelled from ticket data and mode share, with a stated range | The largest category is in, and its uncertainty is visible |
| Signal137 | Some of our data is only an estimate. What then? | Reported as an estimate, with the benchmark or proxy stated | An estimate is never dressed as a measurement |
| Signal137 | What if the measured figure is worse than expected? | Reported as measured | A figure published only when favourable is a marketing choice, not a claim |
| Signal137 | Does this replace our GHG Protocol or ISO 20121 process? | No. It produces the evidence and assumption trail those frameworks require | Alignment, not certification, and stated as such |
| Signal137 | Can we defend the carbon claim and the economic claim together? | Both built from the same evidence structure, on the same discipline | One method in the room, not two |
| Both | Who holds this, and where? | Model, data, and a trained team inside your jurisdiction | The capability survives the change of sustainability lead or auditor |