I would like to know the procedure to follow concerning the mapping of POIs representing towns and villages. When the locality is a simple village, it is quite easy to assign the wikidata code to it since this code is unique. However, when the locality also represents the name of the municipality to which it belongs, there are two wikidata codes: 1 for the municipality and 1 for the village (= municipality section). What code should be assigned to it?
If you’re lucky, “former municipalities” are mapped in the same data model (i.e. as relations forming a polygon) but at admin_level=9. If such a Bernissart object were to exist, that’s the one that should have the Q21770281 tag. Now, since that object doesn’t exist, but there is a place node for Bernissart, I’d say it’s OK to tag that node with that number. At sub-municipal level, it’s bound to get more confusing, as this is all much less official than actual municipalities.