The first step in the analysis is to determine whether the UCC or the common law governs the transaction. If the UCC governs, courts will usually try to find which form constitutes the offer. Next, the offeree's acceptance forms bearing the different terms is examined. One should note whether the acceptance is expressly conditional on its own terms. If it is expressly conditional, it is a counteroffer, not an acceptance. If performance is accepted after the counteroffer, even without express acceptance, under 2-207(3), a contract will exist under only those terms on which the parties agree, together with UCC gap-fillers.