do I have to notify that my company has a different main activity

SEC code in the Business Register versus what the bank requests

The question about the main activity that appears in these types of questionnaires usually does not concern a notification to the bank in the sense of a legal obligation to do so, but rather whether the SBI code that the bank has in its own customer file is still correct. This code originally comes from the Business Register. The Business Register Act 2007 requires the enterprise to communicate amended information to the Chamber of Commerce in a timely manner; the main activity is one of those items of information. In the questionnaire, the bank is in fact asking whether this has already been done, or whether it should update its own file based on what the customer is now stating.

For the questionnaire itself, the practical answer is therefore: state the current main activity as it appears in or should appear in the Business Register. If the amendment has already been processed by the Chamber of Commerce, an extract is the supporting document. If this has not yet happened, then "no, not yet notified" is the factually correct answer — not something to mark as "yes" in the expectation that it will be followed up. The same precision applies, by the way, to the question in which sector is the enterprise active; banks and other customers often compare these two answers with each other, and a discrepancy between them quickly results in a follow-up question.

Where this follows from: the registration requirement in the Business Register Act

The obligation to keep information such as the main activity current follows from the Business Register Act 2007. This Act governs which information about an enterprise is recorded and that amendments must be communicated. The bank itself records in its own customer acceptance and monitoring process what it knows about a customer, and the questionnaire is the means of aligning that file with the Business Register. For the completeness of that file at the bank, the question often also plays a role under which registration number the company is registered, because the bank usually links the main activity to that number in its own verification.