⚠️ Experimental endpoint — not yet a stable contract. This resource ships as experimental / beta. While experimental, its schema and behaviour may change without a version bump — including breaking changes within v2.0 itself. Anyone consuming it does so for evaluation only, or by coordinating adoption with their account manager so changes can be sequenced with them. It graduates to a stable, version-locked contract (where the normal breaking-change rules apply) only when this experimental notice is removed.

Read one discount change belonging to the visible partner, including historical changes when corporate billing is disabled. Optional values are omitted, not null. Failure metadata is omitted as a whole when historical required metadata is incomplete.

Required permission: Partners.update on the visible parent partner. Missing, out-of-scope or wrong-parent identifiers return 404; a visible partner without edit permission returns 403.