(15)It should be possible to form companies fully online. However, Member States should be allowed to limit online formation to certain types of limited liability companies, as specified in this Directive, due to the complexity of the formation of other types of companies in national law. In any event, Member States should lay down detailed rules for online formation. It should be possible to carry out online formation with the submission of documents or information in electronic form, without prejudice to Member States’ material and procedural requirements, including those relating to legal procedures for drawing up instruments of constitution, and to the authenticity, accuracy, reliability, trustworthiness and appropriate legal form of documents or information that are submitted. However, those material and procedural requirements should not make online procedures, in particular those for the online formation of a company and online registration of a branch, impossible. Where obtaining electronic copies of documents satisfying the requirements of Member States is not technically possible, by way of exception, the documents in paper form could be required.