Under a current account agreement, the who keeps the account an account for a certain time and in a certain currency, to accept monetary resources to the oponed account, pay monetery resources from it or perfom other payment transactions to or from the account. Under a contract on opening a letter of credit the issuer of the letter of credit is committed to the committer post, at his request, and account for the benefit a third party letter of credit, and the committer undertakes to pay a fee for its services. Treaty about the collection, the collection agent undertakes to procure for the payer adoption of sum third person, and the collection of principal undertakes to pay the agent for the collection of remuneration.