Transitioning from CH-ID to UID: A Necessary Shift in Swiss Business Register Number Mapping
We would like to inform you that with November 29th the register numbers of companies registered with the Swiss register will be updated.
What is changing?
The Swiss business register number mapping is transitioning from Confederation Helvetica Identification (CH-ID) to Unique Identification(UID). This move is not only a step towards standardization but also a major stride towards facilitating smoother communication between businesses and authorities. The crux of this transition lies in the UID, a standardized business identification number assigned to all active companies in Switzerland.
Why has it changed?
The UID is unique and immutable, making it a reliable and consistent identifier for businesses. The Swiss commercial and VAT register have been utilizing the UID system since 2014, marking a departure from the previously used CH-ID system. This transition is a crucial step towards aligning with the Swiss business register logic and ensuring accurate representation of company numbers. The process of updating the mapping from CH-ID to UID is a meticulous one.
How will our API be affected?
The CH-ID will be retained under the extraData.old number field. This retention serves as a historical record, preserving a link to the past while embracing the new UID system.
In the response example below, you can see the difference.
OLD
{
"id": "AA460EF5F3869C262AE619E2A75D05B2",
"country": "CH",
"registrationNumber": "44040253944",
"name": "HockeyTen GmbH",
"extraData": {
"newNum": "CHE259953139",
"oldNumber": "CH44040253944",
"newNumber": "CHE259953139"
},
"requestTime": 1697097882,
"lastUpdate": 1697097882,
"officialNumber": [
"44040253944"
],
"mainSourceName": "Federal Office of Justice (Bundesamt für Justiz - Zentraller Firmenindex ZEFIX)"
}NEW
{
"id": "AA460EF5F3869C262AE619E2A75D05B2",
"country": "CH",
"registrationNumber": "CHE259953139",
"name": "HockeyTen GmbH",
"extraData": {
"oldNumber": "CH44040253944",
},
"requestTime": 1697097882,
"lastUpdate": 1697097882,
"officialNumber": [
"CHE259953139"
],
"mainSourceName": "Federal Office of Justice (Bundesamt für Justiz - Zentraller Firmenindex ZEFIX)"
}
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