How to create an identity validation request for an european organization? validation is done for US/Canada only!

I would like to sign our company's binaries with Microsoft Azure Trusted Signing service and therefore have to fill the identity validation request form for our organization.

Our organization is a Swiss company, located in Switzerland.

Here, in Switzerland, we use a different business identifier, not compatible with the validation done on the “Business identifier” field of the form, which is made for US.

I selected the correct country, region and postal code, so I would have thought that this form would accept inputs for European companies.

I also changed all Azure's interface language to French (Switzerland) but this has no effect. I really think that the form has been made for America/Canada, without thinking for abroad companies.

I can only choose between “Duns Number”, “Tax Id” or “Registered Business Number” .

None of these choices is compatible with the Swiss commercial register number, which is, in our case, CH-270.3.000.536-3.

Does it mean that Azure Trusted Signing is only reserved to America?

Has anybody got an idea how to fill this form or to do the identity request by another way?

Thanks in advance for your inputs.