Caviar sturgeon from the Sea of Azov began reaching the tables of aristocratic and noble Byzantine Greeks in the 10th century, after the commencement of large-scale trading between the Byzantine Empire and Kievan Rus'. The main types of caviar are Beluga, Sterlet, Kaluga hybrid, American osetra, Ossetra, Siberian sturgeon and Sevruga. The rarest and costliest is from beluga sturgeon that swim in the Caspian Sea, which is bordered by Iran, Kazakhstan, Russia, Turkmenistan, and Azerbaijan. Wild caviar production was suspended in Russia between 2008 and 2011 to allow wild stocks to replenish. Azerbaijan and Iran also allow the fishing of sturgeon
SWIFT message types SWIFT message types SWIFT Message types are the format or schema used to send messages to financial institutions on the SWIFT ("Society for Worldwide Interbank Financial Telecommunication") network. The original message types were developed by SWIFT and retrospectively made into an ISO standard, ISO 15022. This was later supplemented by a XML based version under ISO 20022. The SWIFT network supports the following message standards: SWIFT messages consist of five blocks of the data including three headers, message content, and a trailer. Message types are crucial to identifying content. All SWIFT messages include the literal "MT" (Message Type). This is