Editorial draft available to read. Factual and language review is pending. Examples are illustrative.
Decision and method
Carry each quantity with its currency or unit and document whether conversion occurs. Preserve the original value, applied rule, precision and rate context where relevant. Separate conversion from presentation: displaying a different symbol does not correctly change the meaning of a number that was originally expressed in another currency.
Illustrative example
Illustrative example: one system sends 2.5 tonnes while the receiver works in kilograms. The contract transforms the quantity and preserves its original unit for traceability. In an international quotation, a converted amount is identified as a conversion using a recorded rate, while the original contractual amount remains separate and recognizable.
Acceptance check
Test zero, decimals, large quantities and incompatible units. Check rounding at both line and total levels under the agreed rule. Accept when a sample can be reconstructed from its source and differences are explainable. Do not combine different currencies or units without an explicit transformation that another person can review.
Key takeaways
- An interoperable quantity includes its unit, origin and explicit transformation rules.