This page contains an overview of Missing IDs encountered in lists of monuments. These are entries in the monument list templates where the monument identifier — the primary key used to uniquely identify the monument in the database — is missing or empty. Entries without an ID cannot be reliably harvested and are skipped by the bot. All the pages and the statistics are updated on a regular basis by a bot based on the data in the monuments database.

How does it work?

Every night a ErfgoedBot updates the Monuments database with all the lists we have on Wikipedia. When the bot processes a monument row template it checks whether the monument identifier (the primary key field) has been filled in. If the identifier is missing or empty, the monument cannot be stored in the database. The bot makes a note of this and reports the affected pages and the number of missing IDs per page.

Note that for some countries the monument identifier is composed of multiple template fields (e.g. a municipality code combined with a monument number). In these cases the entry is reported as having a missing ID if any of the fields that make up the identifier are empty.

How can you help?

Go to the missing IDs page (linked below). You'll see a table listing each source page and how many monument entries on that page are missing their identifier.

For each page, open it and look for monument entries where the ID field is empty. There are a few common scenarios:

• Accidentally left blank: The ID field was simply not filled in when the entry was added. Look up the correct identifier and add it.
• Newly added monument: A volunteer added a monument to the list but did not yet know its official identifier. Try to find the correct ID from the relevant heritage register or authority.
• Malformatted template: The template parameters may have been shuffled or broken, causing the ID field to end up empty even though the value is present elsewhere in the entry. Fix the template formatting so the ID is in the right parameter.

After you fix a missing ID, the next time ErfgoedBot harvests that list (probably tonight) the entry will be removed from the report and the monument will be correctly stored in the database.

How can I localise the instructions?

Since the missing ID reports are overwritten by ErfgoedBot each time the list is updated you cannot add instructions (or categories) directly to the page. To solve this the /header sub-page is automatically included at the top of the page, if it exists. Thus to add instructions for volunteers in your own language simply create the /header sub-page with the required information.

To localise the message used when there are no more missing IDs, simply create a /done sub-page with the desired message.

Overview