@openstreetmap/id-tagging-schema/data/fields/payment_multi_fee.json

The OpenStreetMap tagging model used by the iD editor

{
    "key": "payment:",
    "type": "multiCombo",
    "label": "{payment_multi}",
    "prerequisiteTag": {
        "key": "fee",
        "valueNot": "no"
    },
    "stringsCrossReference": "{payment_multi}"
}