Add "inventoryNumber" to holdings

[TobiasNx]

In ITM $B Alma provides the inventory number of an item. Currently this is not mapped to lobid. In context of hbz/lobid-extra-holdings#1 (comment) DE-Sol1 was requesting this.

schema.org does not have an inventory number, as far as I can see.
sdo:sku seems to have an matching definition:

The Stock Keeping Unit (SKU), i.e. a merchant-specific identifier for a product or service, or the product to which the offer refers.

But is often used in the schema.org library examples for the call number. See: https://www.w3.org/community/schemabibex/wiki/Holdings_via_Offer and
schemaorg/schemaorg#733 (comment)

Alternative http://terminology.lido-schema.org/lido00113 but not sure if this work?

Or we add our own property.

@acka47 what do you think?

We also should think about if we add the inventory date (ITM $D) and the inventory update date (ITM $Y).

<datafield tag="ITM" ind1=" " ind2=" ">
<subfield code="H">2214088280007830</subfield>
<subfield code="x">kA</subfield>
<subfield code="f">BOOK</subfield>
<subfield code="v">kA</subfield>
<subfield code="p">04</subfield>
<subfield code="X">System</subfield>
<subfield code="Y">2003-10-27 01:00:00 Europe/Berlin</subfield>
<subfield code="n">GA 2989</subfield>
<subfield code="M">49HBZ_BRIDGE_SAS</subfield>
<subfield code="s">1</subfield>
<subfield code="d">0</subfield>
<subfield code="V">System</subfield>
<subfield code="b">keinBarcode</subfield>
<subfield code="a">2314088260007830</subfield>
<subfield code="c">GA 2989</subfield>
<subfield code="B">1991.591</subfield>
<subfield code="D">20031027</subfield>
<subfield code="W">2024-12-12 07:13:58 Europe/Berlin</subfield>
<subfield code="u">Z9035</subfield>
<subfield code="w">Z9035</subfield>
</datafield>

maps currently to:

hasItem: [...
   {
      "label": "lobid Bestandsressource",
      "type": [
        "Item",
        "PhysicalObject"
      ],
      "callNumber": "GA 2989",
      "serialNumber": "keinBarcode",
      "currentLibrary": "Z9035",
      "currentLocation": "kA",
      "heldBy": {
        "isil": "DE-Sol1",
        "id": "http://lobid.org/organisations/DE-Sol1#!",
        "label": "Stadtarchiv Solingen, Bibliothek"
      },
      "inCollection": [
        {
          "id": "http://lobid.org/organisations/DE-Sol1#!",
          "label": "Stadtarchiv Solingen, Bibliothek"
        }
      ],
      "id": "http://lobid.org/items/990013049400206441:DE-Sol1:2314088260007830#!"
    },

It should also include:

"inventoryNumber": "1991.591",
"inventoryDate" : "2003-10-27",
"dateUpdated": "2003-10-27"

Not sure if this is correctly modeled.

[acka47]

I plead for focusing on the requested information and after taking a look at Bibframe, RDA and LOV I am for creating our own property in lobid-vocabs.