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Data that can be stored at the Occurrence level includes:

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1. Serial Number - This running number is part of the https://drofus.atlassian.net/wiki/spaces/DV/pages/2487418939/Classification+and+Numbering#System-numbering solution that is combined with Number to define a unique Number per occurrence.

2. Number - The unique number per occurrence that combined the Item number with the Serial Number.

3. Name - Optional text to define a unique occurrence by name.

4. Quantity - how many times is the Items to be included in the room. The row of Item types would be a single Occurrence with a quantity of instances of that type. 

5. Existing Quantity - If any of the Item types already exists so that procurement is not necessary, this can be specified here. This quantity will then be deducted from the net accounts for this Item.

6. Owner - If one or more parties own the Item Occurrence, the party to be specified as Owner of the Item Occurrence can be defined here.

7. Priority - Priority for how important the Item Occurrence is compared to other item Occurrences in other Rooms.

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2. Comment - comments for the specific occurrence

3. Product - the linked products associated with the occurrence

4. Room - the linked room where the occurrence is located (when room based)

5. Responsibility - the responsibility of the item is carried to the occurrence by default. The occurrence can be overwritten with different responsibilities to further define specific responsibilities for the occurrence.

6. Item - the linked item associated with the occurrence.

Occurrence Data - Project defined data fields. See next section

The quantity of each Item forms the basis for the gross quantity of this Item in the room. The net quantity is the quantity minus the existing quantity. In addition, there are sub Item which are not to be included in the quantity calculation and deducted so that they are not part of the net quantity. Net quantity together with the Item budget price provides an estimate of how much an Item list for a room will cost. This total figure will be presented in budget reports and reports on Item in room. 

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For detailed instructions on creating new properties using a dynamic graphical user interface (GUI) User Interface Editor and controlling which item the property is displayed on (Item view filter), look at the admin guide Item Occurrence GUI User Interface Editor

Updating Occurrences data

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