Offer
An Offer represents an authorized expression that something may be made available under stated conditions.
Specification-sourced: quoted from the governing specification, pending the applicable specification-owner approvals. The specification controls.
In plain words
An Offer may concern Capability, Capacity, Material, Facility access, an Instrument or another contribution, as when a lender offers transition finance on conditions. It is not a permanent seller identity: the same Subject may create Offers and Seeks in different contexts.
What it is not
Offer ≠ Seek
An Offer expresses what a participant is willing to make available; a Seek expresses what it wishes to obtain or make possible. Semantic Distinctions Among Signals · Concept Paper (source: 01 §5.2)