Two questions, and what each one decides

What has to be true

Two questions decide whether this work is possible and whether it is finished. What has to exist before a transaction can be written down at all, and what has to be settled before any of it could be enforced by a shared record.

They are not the same question, and the distance between them is most of the work.

Before it can be modelled

What has to exist before a transaction can be written down.

A transaction does not have to be orderly to be modelled. The valuable ones usually are not, and a process nobody has documented is the normal starting point rather than an obstacle.

What it does need is enough substance to answer five questions. If all five hold, the transaction can be written down whatever state it is in today.

The five, and what each one means
What has to existWhich means
A consequential subjectIdentifiable goods, a shipment, a warehouse position, a payment, a right, an account, a claim or a case. Something a party can point at and mean the same thing by.
More than one party who can affect itSomeone instructs, another verifies, another holds custody, another finances, insures, accepts or regulates.
Actions that change a positionRelease, delivery, inspection, acceptance, payment, substitution, allocation, claim or cancellation.
Conditions the actions depend onAuthority, evidence, quantity, quality, time, location, a hold, a payment condition or a previous event. If every action is negotiated fresh, you have a negotiation rather than a transaction, and there is nothing to write down.
A process that can be observedNot perfectly documented. Reconstructible, through people, documents, systems, physical hand-offs and the exceptions everybody remembers.

Nothing on that list asks the client to arrive with rules already written. The work is to find where the rules are absent, in conflict, or carried silently by experienced people.

Mappable, and ledger-ready

A transaction can be written down long before it could be enforced.

These are two different states and most transactions are in the first. Reaching the second is not a technical step. It is a set of agreements between organisations that do not currently have them.

The two states, side by side
A transaction is mappable whenIt is ledger-ready when
You can reconstruct what happens, and whyThe parties can agree what counts as a valid state change
You can identify the subjects, roles, evidence and hand-offsEach material action can be attributed to an authorised party
You can expose the gaps and the ambiguityThe necessary evidence can be issued, versioned, shared and relied upon
You can state the controls you wantThose controls can be checked before the action is accepted
You can describe the exceptionsThere is an agreed response when physical reality, evidence and instructions conflict

This is why the model comes first. A ledger cannot resolve an unclear transaction. It can only make an unclear process run faster, and permanently.

What gets written down

Every transaction is made of the same classes. Where the weight falls is what makes yours different.

Every organisation describes its own process in its own words, which is why no two descriptions can be held against each other, and why the same question gets asked six times and answered six ways. We work from a fixed list of classes, so that a coffee trade and a copper trade can be compared at all, and so that nothing gets left out because nobody thought to ask.

A class is one kind of thing a transaction has to settle.

Six of them, in plain words
ClassWhat it settles
SubjectThe thing itself. Which parcel, which batch, which cargo, identified so two parties cannot mean different things by it.
InterestWho has a claim on it, and whose claim comes first.
FactWhat is asserted to be true, by whom, and from when.
ObligationWhat someone owes, to whom, and by when.
InvariantWhat must never be true, whatever else happens.
DisclosureWho may see what, and who may not.
These six appear in almost every transaction. There are more. Which of the others matter is settled against a real transaction, not in advance.
Which classes matter most, by trade
What you tradeWhich classes matter mostThe question it turns on
Softs and agriFact, InvariantWhether the figure that governs is the one everyone is acting on
Metals under financeSubject, InterestWhether anyone else has a claim on the same goods
Energy in transitObligation, FactWhether “released” means the same thing to the carrier, the terminal and the bank
Chemicals in distributionDisclosure, ObligationWhich declared fact binds, and who it binds downstream

Two parties to the same transaction fill in the same list differently. Where they differ is what we are looking for.

Where control ends

When your control must be trusted by someone else.

Your internal controls do not stop mattering when a transaction crosses into custody, finance, insurance, regulation or a new counterparty. They become the basis on which another organisation decides whether to release goods, advance funds, insure risk, accept a declaration or continue the relationship.

Advisa maps the point where internal operating control becomes externally relied-upon evidence: what the other party needs to know, which facts they can rely on, who is authorised to provide them, and what must happen when they change.

Four moments when somebody outside has to decide whether to rely on it
When it gets askedWhat the external party needs to rely onWhat the transaction model establishes
Before a facility is renewed, extended or increasedWhether financed goods are identified, eligible, not subject to an undisclosed competing claim, and released only through the agreed control process.The relationship between custody, stock position, lender control, release authority, evidence currency and enforcement state.
Before a due-diligence statement or regulated declaration is signedWhich facts are established by suppliers, inspectors, warehouses or other parties; what evidence supports them; and how later correction or supersession is handled.A source-to-declaration evidence chain, accountable roles, effective dates, dependency record and exception path.
Before a new warehouse, custodian or counterparty joinsWhat authority, evidence, access, control risk and operational dependency the new participant introduces.A before-and-after control map: what changes, which permissions are new, which evidence is now relied upon, and what controls need adjustment.
After a release, claim, discrepancy or control failureWhether the same weakness exists elsewhere, who could have acted, what they knew at the time, and what control should now prevent recurrence.A replayable event, authority and evidence view that supports root-cause analysis and a targeted remediation plan.

Control ends at the boundary. Accountability does not.