equipment_assignment contract v1

{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://docs.demiton.io/registers/equipment_assignment/v1.json",
  "title": "equipment_assignment contract v1",
  "type": "object",
  "required": [
    "asset",
    "external_id",
    "hours",
    "occurred_at",
    "project"
  ],
  "properties": {
    "asset": {
      "type": "number",
      "description": "the plant/equipment item assigned",
      "x-demiton-requiredness": "required",
      "x-demiton-reference": true
    },
    "hours": {
      "type": "number",
      "description": "hours the plant is assigned for",
      "x-demiton-requiredness": "required",
      "x-demiton-unit": "hours",
      "x-demiton-type": "decimal"
    },
    "status": {
      "type": "object",
      "description": "the assignment's state",
      "x-demiton-requiredness": "optional"
    },
    "worker": {
      "type": "string",
      "description": "the person assigned to operate the plant, when the row names one",
      "x-demiton-requiredness": "optional",
      "x-demiton-reference": true
    },
    "project": {
      "type": "string",
      "description": "the job the plant is assigned to",
      "x-demiton-requiredness": "required",
      "x-demiton-reference": true
    },
    "external_id": {
      "type": "number",
      "description": "the source row's own identifier (`id`)",
      "x-demiton-requiredness": "required"
    },
    "occurred_at": {
      "type": "string",
      "description": "the resource date the assignment is for",
      "x-demiton-requiredness": "required",
      "x-demiton-unit": "day",
      "format": "date",
      "x-demiton-type": "date"
    },
    "financial_period": {
      "type": "string",
      "description": "the period the assignment is attributed to",
      "x-demiton-requiredness": "optional",
      "x-demiton-reference": true
    }
  },
  "x-demiton-register-type": "equipment_assignment",
  "x-demiton-contract-version": "1.0.4",
  "x-demiton-store": "tenant",
  "x-demiton-axes": [
    {
      "axis": "financial_period",
      "requirement": "optional",
      "role": "context"
    },
    {
      "axis": "project",
      "requirement": "required",
      "role": "subject"
    },
    {
      "axis": "asset",
      "requirement": "required",
      "role": "subject"
    },
    {
      "axis": "worker",
      "requirement": "optional",
      "role": "subject"
    }
  ],
  "x-demiton-measures": [
    {
      "key": "hours",
      "accumulation": "additive",
      "dtype": "decimal",
      "unit": "hours"
    }
  ],
  "x-demiton-provenance": {
    "standards": [
      {
        "code": "AS 2550 (series)",
        "title": "Cranes, hoists and winches - Safe use",
        "access": "paywalled_secondary",
        "region": "Australia",
        "edition": "AS 2550.1-2011; AS 2550.4:2025; AS 2550.5:2016; AS 2550.10:2025",
        "checked_on": "2026-09-14"
      },
      {
        "code": "Model WHS Regulations",
        "title": "Model Work Health and Safety Regulations (Safe Work Australia; given effect by each state/territory)",
        "access": "full_text_verified",
        "clause": "regs 81, 237(3); Sch 3",
        "region": "Australia",
        "edition": "as amended 5 December 2025",
        "checked_on": "2026-09-14"
      },
      {
        "code": "ISO 55001",
        "title": "Asset management - Asset management system - Requirements",
        "access": "paywalled_secondary",
        "clause": "8.1",
        "region": "International",
        "edition": "2024 (AS ISO 55001:2024 identical AU adoption)",
        "checked_on": "2026-09-14"
      },
      {
        "code": "ISO/TS 15143-3",
        "title": "Earth-moving machinery and mobile road construction machinery - Worksite data exchange - Telematics data (AEMP 2.0)",
        "access": "paywalled_secondary",
        "region": "International",
        "edition": "2020 (SA TS ISO 15143.3:2021 AU and PD ISO/TS 15143-3:2020 UK identical adoptions)",
        "checked_on": "2026-09-14"
      }
    ]
  },
  "description": "Current and past equipment assignments to projects and sites.",
  "x-demiton-contract-url": "https://docs.demiton.io/registers/equipment_assignment/",
  "x-demiton-register-catalog": "https://docs.demiton.io/concepts/register-catalog"
}