In accounting theory, transactions take place when one party to an agreement has completely fulfilled their obligations. The term is noteworthy because accountants traditionally do not record items in a company's records until a transaction has taken place.
a transaction is data in motion. A transaction can be a Create, Get, Retrieve, View, Update, and Delete.
Transfer of emissions allowances from one Register account to another. It is possible to have internal transactions between two accounts on the same Register as well as external transactions between two accounts that exist on different national Registers (e.g., Germany and Italy). The deleting and surrender of emissions allowances are also transactions.