Formation of contract—What have the parties contractually agreed? It is first necessary to identify what the supplier and customer have contractually agreed will be supplied and installed. As such one must first consider all of the communications and discussions between the parties comprising the offer and acceptance process. This will include, without limitation, the detail of the invitation to tender document, the quotation, confirmation of acceptance, invoices and other emails, telephone calls and discussions between the parties relating to the subject matter. Included within those considerations any terms on which quotations and tender documents are purported to be made. A legally binding contract must, among other things, comprise both an offer and acceptance. Practice Note: Forming enforceable contracts—offer analyses the requirements for a legally binding offer, and considers what we mean by 'offer', how to distinguish an offer from an ‘invitation to treat’, with relevant common examples, different