{
  "request_no": "PR-20251014-016",
  "job_no": "TK-MP-TEST-001",
  "created_at": "2025-10-14T02:54:33.149908",
  "materials": [
    {
      "material_id": 88142,
      "description": "HALF NIPPLE, SMLS, SCH 80S, ASTM A312 TP304 SW X NPT",
      "category": "FITTING",
      "size": "1/2\"",
      "material_grade": "ASTM A312 TP304",
      "quantity": "3.000",
      "unit": "EA",
      "user_requirement": ""
    },
    {
      "material_id": 88144,
      "description": "HALF NIPPLE, SMLS, SCH 80S, ASTM A312 TP304 SW X NPT",
      "category": "FITTING",
      "size": "1/2\"",
      "material_grade": "ASTM A312 TP304",
      "quantity": "3.000",
      "unit": "EA",
      "user_requirement": ""
    }
  ],
  "grouped_materials": [
    {
      "group_key": "HALF NIPPLE, SMLS, SCH 80S, ASTM A312 TP304 SW X NPT|1/2\"|undefined|ASTM A312 TP304",
      "material_ids": [
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      ],
      "description": "HALF NIPPLE, SMLS, SCH 80S, ASTM A312 TP304 SW X NPT",
      "category": "FITTING",
      "size": "1/2\"",
      "material_grade": "ASTM A312 TP304",
      "quantity": "3.000",
      "unit": "EA",
      "user_requirement": ""
    }
  ]
}