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Linear TV: preemption notice + replacement offer / accept-reject workflow #5683
Description
Part of a five-issue set extending AdCP to support linear TV. These map to the buyer-expresses / seller-fulfills contract model AdCP already uses (
measurement_terms,performance_standards,makegood_policy) — the goal is to add linear-specific objects onto that existing two-sided spine, not a separate "linear mode."Set: targeting · demos · GRP · airing log · makegoods/preemption.
Gap
makegood_policy already enumerates remedies (additional_delivery, credit, invoice_adjustment) and there is variance/cancellation handling. But cancellation is all-or-nothing and a makegood is a static aggregate remedy triggered by variance — there is no interactive preemption loop ("spot preempted, here's a replacement, do you take it?").
Missing
- Preemption notice as a normal operation (not all-or-nothing cancellation)
- Seller→buyer replacement offer object
- Buyer accept/reject workflow on that offer
- Makeup scheduling
Proposed shape
- Buyer expresses: accept/reject on a replacement offer
- Seller fulfills/returns: preemption notice + replacement offer
Notes
Heaviest of the five — adds a new interactive workflow. Sequence last.
Activity
pkras commentedon Jun 24, 2026
Linear TV set — related issues (suggested sequence):
18 remaining items
bokelley commentedon Oct 8, 2026
How pre-approved makegoods work today (Greg Morey, O-N-X, 2026-10-08): line alternates. The IO names a primary program and a ranked list of pre-approved alternates, for example:
If the primary is preempted, the seller airs the highest-ranked alternate available, and no per-spot negotiation is needed.
That gives the 3.4 contract-time half a concrete shape that's simpler than general "same-or-better" criteria: an ordered
line_alternates[]on the booked line (program/network/daypart references), agreed at contract time. The report-time half that's in progress for 3.3 already covers the result: amakegoodrow withreplaces_spot_id. A 3.4 follow-up could add which alternate rank was used. General same-or-better criteria can come later if anyone asks.feat(media-buy): spot lifecycle, makegood linkage and break position …
docs(creative): expand broadcast TV guide with reconciliation contrac…
feat(media-buy): seller offers against an accepted media buy
feat(media-buy): seller offers against an accepted media buy
feat(media-buy): seller offers against accepted buys and pre-agreed s…
feat(media-buy): seller offers against accepted buys and pre-agreed s…
feat(media-buy): seller offers against accepted buys and generic pre-…
feat(media-buy): seller offers against accepted buys and generic pre-…
feat(media-buy): seller offers against accepted buys and generic pre-…
feat(media-buy): seller offers against accepted buys and generic pre-…
bokelley commentedon Oct 31, 2026
Part of this shipped: report-time
spot_status,scheduled_atandreplaces_spot_idin #8017 (3.3.0-beta.0), and the interactive seller offer lane withoffer_reason: preemptionin #8102 (3.3.0-beta.2). The offer lane's seller-held allowance part is 4.0 (#8660).Contract-time pre-approval (
preemption_criteriaorline_alternates[]) was assigned to 3.4 (#5683 (comment)) and not decided for 3.3, so per the WG rule ('anything not decided moves to 3.4') only that remainder moves to 3.4. Objections by Fri 2026-11-06. The milestone stays 3.3.0 for now; it will be moved after Nov 6.