Planning Physics Encyclopedia

    Enterprise planning power begins with explicit physics.

    Enterprise planning does not have to mean a heavyweight platform. It does require explicit rules for inventory, flow, lead time, capacity, constraints, commitments, and authority. This is the operator's reference to the concepts that make plans reproducible, explainable, and defensible when conditions change.

    Planning physics map

    Planning power is a connected system.

    Forecasts become governed demand, usable supply becomes promiseable, promises become commitments, and decisions become a planning record. Trace the connections.

    Hover a concept to trace its connections, or click to read it.

    Supply & inventory state
    Planning fundamentals
    Lead time & timing
    Risk, buffers & service
    AI agents & authority
    Traceability & governance
    Planning architecture

    Reader paths

    Start with the planning problem in front of you.

    Four short routes through the concepts, organized by the work you need to do.

    Term explorer

    Twelve concepts behind enterprise-grade planning.

    Search or filter the Tier-1 entries. Every definition is sourced and labeled by confidence.

    Category

    12 of 12 terms

    Available-to-promiseATP
    EstablishedATP · CTP · Promising

    The eligible, uncommitted supply you can still promise to a new order, by date.

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    Capable-to-promiseCTP
    EstablishedATP · CTP · Promising

    Whether the network can create the missing supply — make, buy, move — in time.

    Read the entry →
    Usable future supply
    Ventoux interpretationSupply & inventory state

    Supply that can truly cover a demand once state, timing, quality, and eligibility are applied.

    Read the entry →
    Planning invariant
    Proposed conceptPlanning fundamentals

    Every official plan stays attached to the context, method, and authority that produced it.

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    Deterministic allocation
    EstablishedCommitments & allocation

    Scarce supply assigned by declared, versioned rules — same context, same governed result.

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    Pegging
    EstablishedCommitments & allocation

    The trace linking a demand to the supply intended to cover it — and back again.

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    Time fence
    EstablishedLead time & timing

    A governed boundary that changes which actions are allowed as the need date approaches.

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    Safety stock
    EstablishedRisk, buffers & service

    A governed buffer sized to absorb uncertainty at a defined service objective.

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    Commitment ledger
    Proposed conceptCommitments & allocation

    Every event by which future supply is reserved, promised, released, consumed, or superseded.

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    Governed agent
    Ventoux interpretationAI agents & authority

    An agent whose evidence, tools, permissions, and state changes are explicit — authority follows the action.

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    Audit trail
    EstablishedTraceability & governance

    A secure, time-ordered record of who or what changed planning data, decisions, and commitments.

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    Plan run
    EstablishedPlanning architecture

    A named execution of a planning method against a declared snapshot and engine version.

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    From reference to operating work

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