# `Logistiki.Knowledge.Result`
[🔗](https://github.com/thanos/logistiki/blob/v0.1.0/lib/logistiki/knowledge/result.ex#L1)

The outcome of evaluating the knowledge layer for a single business event.

Captures the business-rule decisions, the selected accounting policy, the
resolved posting template, the resolved account roles, and the required
dimensions. The runtime turns this into a journal draft.

## Fields

  * `event_id` — `term() | nil` — the originating event id
  * `blocked` — `boolean()` — `true` when a business rule blocked the event
  * `requires_approval` — `boolean()` — `true` when approval is required
  * `policy` — `atom() | nil` — the selected accounting policy (e.g. `:cash_deposit`)
  * `template` — `atom() | nil` — the selected template (= the policy in v0.1.0)
  * `template_postings` — `[map()]` — ordered posting specs, each with
    `:sequence`, `:direction`, `:role`, `:amount_var`, `:currency_var`
  * `account_roles` — `%{atom() => String.t()}` — resolved role-to-code
    mappings (e.g. `%{cash_account: "ASSETS:CASH:USD:NOSTRO", ...}`)
  * `required_dimensions` — `[atom()]` — e.g. `[:entity_id, :currency, :account_code]`
  * `explanation` — `map()` — why the policy was selected / blocked

## Example

    %Logistiki.Knowledge.Result{
      event_id: "evt_001",
      blocked: false,
      requires_approval: false,
      policy: :cash_deposit,
      template: :cash_deposit,
      template_postings: [
        %{sequence: 1, direction: :debit, role: :cash_account, ...},
        %{sequence: 2, direction: :credit, role: :client_liability_account, ...}
      ],
      account_roles: %{
        cash_account: "ASSETS:CASH:USD:NOSTRO",
        client_liability_account: "LIABILITIES:CLIENT_DEPOSITS:USD:ACME:OPERATING"
      },
      required_dimensions: [:entity_id, :currency, :account_code],
      explanation: %{reason: :unique, selected: :cash_deposit}
    }

# `t`

```elixir
@type t() :: %Logistiki.Knowledge.Result{
  account_roles: %{required(atom()) => String.t()},
  blocked: boolean(),
  event_id: term(),
  explanation: map(),
  policy: atom() | nil,
  required_dimensions: [atom()],
  requires_approval: boolean(),
  template: atom() | nil,
  template_postings: [map()]
}
```

The struct type. See the module documentation for field details and examples.

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*Consult [api-reference.md](api-reference.md) for complete listing*