my customer sends the questionnaire in English, does that work too

English-language questionnaires are recognized, even if the file is in Dutch

Yes, that works. The system recognizes questions based on content, not on the language in which they are asked. An English question such as "Does the company have professional liability insurance?" is recognized as the same question as "Heeft de onderneming een aansprakelijkheidsverzekering?" — the system links it to the same place in the supply chain file, namely the answer to the question about professional liability insurance for businesses. The language of the question does not change which answer belongs to it.

This also applies to lists that use English technical terms that have no direct translation in Dutch, such as "scope 3 emissions" or "annex A controls" in an ISO 27001 questionnaire. The system recognizes these as a reference to the known components — for example the control measures from Annex A of ISO/IEC 27001 — and fills in from the same file. Where the file has no substantiated answer for that component, the field remains open, just as with a Dutch list. The language of the input is therefore not a separate threshold; the presence of a fact in the file is. Fields such as the sector in which the enterprise operates are recognized in the same way, whether the question is asked in English, German or French.

Recognition is based on the question, not on the source language of the portal

This follows from how the system matches questions: it compares an incoming question against the question as recorded in the supply chain file, regardless of the language of the customer's portal. A German or French questionnaire from a customer is processed in the same way. For subjects that come from a specific regulation — such as the ten measures of Article 21(2) of Directive (EU) 2022/2555 (NIS2), often submitted in English by international customers — the source language does not change which fact from the file is cited. The confirmation of each answer with yes or no remains with the customer, regardless of the language of the questionnaire.