Corrections
How to report and track a calculation, rule, or content correction.
Last reviewed: August 31, 2026
Submit a correction
Email corrections@shipmargin.com with the affected URL, observed output, expected output, reproduction inputs, and the best available authoritative source. Do not send customer addresses or personal order data.
What happens next
We reproduce the issue, classify whether it affects data, formula, copy, or presentation, and record the review. Material rule or formula changes receive a new version and effective date.