If the article of sale is unable to be used in the way envisaged in the contract as a consequence of work not having been done or having been done wrongly based on suggestions or advice having been given either prior to or after conclusion of the contract, or if other additional contractual obligations have been breached (especially instructions for operating and maintaining the article of sale), then the rules set out in sections VII and VIII.2 accordingly apply, excluding other claims on the part of the ordering party.