(1) 'General terms and conditions' are defined as pre-drafted contractual terms for a large variety of contracts which are used to conclude a contract by one of the parties, irrespective whether they are a separate part of the contract or included in the contract itself.
(2) A 'contractual form' is comparable to general terms and conditions, but it is also given if it only refers to parts of the contract or specific contractual clauses.
(3) A notice on the change to electronic invoices is considered to be general terms and conditions or at least a contractual form.