SIE.3:5.1 - Reuse for Provider Availability
The receiving interface returns separately attributed provider quantities. Its questions are “How much is on hand now?” and “How much can this provider promise under its reservation and time-horizon rules?”
An available model already distinguishes both measures, their provider, unit, observation time, and relevant horizon. The integrator checks the following cases:
| Case | Required model interpretation |
|---|---|
| Provider A reports 12 on hand; provider B reports 9 available to promise. | Two qualified quantities with distinct measure meanings. |
| Both values happen to equal 12. | Numerical equality does not remove the difference between the measures. |
| The provider changes the promise horizon. | The horizon remains part of the promise meaning used by the receiver. |
The model represents these cases and has suitable access and maintenance conditions. The completed result references that edition for the two questions. It supplies no common quantity formed by adding the values; that operation would require a separately justified receiving meaning.