can I process questionnaires from multiple customers side by side

Processing multiple lists at the same time is the normal way of working

Yes, that is precisely what the chain file is designed for. Instead of starting over for each customer, every list populates itself from the same underlying answers: the registration number, the turnover, the countries where the undertaking has establishments, the certificates, the security measures. If you receive a cybersecurity list from one customer this month and a sustainability list from another, both use the same source. You confirm each list again with yes or no, but you do not type out the answer again.

What does matter is the format. Each portal poses its own questions in its own order and choice of words. One customer asks about "the ten measures of Article 21(2) NIS2", another about "ISO/IEC 27001 Annex A measures" — substantively overlapping, but not identically worded. The system recognizes for each question which underlying answer fits, even if the question is worded differently than with the previous customer. If a substantiation is missing — for example because a certificate has not yet been obtained or a continuity plan does not yet exist — that field is left empty or marked as outstanding, for each list separately. A yes is never suggested without a documented answer behind it.

Why this is possible: one file, different uses

That different customers ask largely the same type of data follows from the nature of the underlying legislation and standards themselves: the Handelsregisterwet 2007 establishes fixed basic data of an undertaking, the EFRAG VSME baseline module and Directive (EU) 2022/2464 (CSRD) ask for largely the same sustainability indicators from each customer, and the ten measures of Article 21(2) of Directive (EU) 2022/2555 (NIS2) recur in virtually every cybersecurity form, sometimes alongside the Annex A measures of ISO/IEC 27001. One central answer — for example to Does the undertaking use AI systems in its service delivery? or to Does the undertaking have a plan to continue operations in case of serious disruption? — can therefore serve multiple customers at the same time, without the origin differing per customer.