"on file" meaning in English

{
  "head_templates": [
    {
      "args": {
        "1": "en",
        "2": "prepositional phrase"
      },
      "expansion": "on file",
      "name": "head"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "prep_phrase",
  "senses": [
    {
      "examples": [
        {
          "text": "I've got it on file somewhere."
        }
      ],
      "glosses": [
        "In a file, as a file folder; available for reference."
      ],
      "id": "en-on_file-en-prep_phrase-lh-hbTRy",
      "links": [
        [
          "file",
          "file"
        ],
        [
          "file folder",
          "file folder"
        ]
      ]
    },
    {
      "categories": [
        {
          "_dis": "15 85",
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        }
      ],
      "examples": [
        {
          "text": "My record of complaints about your business is on file with the Better Business Bureau."
        }
      ],
      "glosses": [
        "Duly submitted and accepted."
      ],
      "id": "en-on_file-en-prep_phrase-0DIW0Slv",
      "translations": [
        {
          "_dis1": "11 89",
          "code": "pl",
          "lang": "Polish",
          "sense": "Translations",
          "word": "w aktach"
        }
      ]
    }
  ],
  "word": "on file"
}

{
  "categories": [
    "English entries with incorrect language header",
    "English lemmas",
    "English multiword terms",
    "English prepositional phrases",
    "Translation table header lacks gloss"
  ],
  "head_templates": [
    {
      "args": {
        "1": "en",
        "2": "prepositional phrase"
      },
      "expansion": "on file",
      "name": "head"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "prep_phrase",
  "senses": [
    {
      "examples": [
        {
          "text": "I've got it on file somewhere."
        }
      ],
      "glosses": [
        "In a file, as a file folder; available for reference."
      ],
      "links": [
        [
          "file",
          "file"
        ],
        [
          "file folder",
          "file folder"
        ]
      ]
    },
    {
      "examples": [
        {
          "text": "My record of complaints about your business is on file with the Better Business Bureau."
        }
      ],
      "glosses": [
        "Duly submitted and accepted."
      ]
    }
  ],
  "translations": [
    {
      "code": "pl",
      "lang": "Polish",
      "sense": "Translations",
      "word": "w aktach"
    }
  ],
  "word": "on file"
}