This message type is sent from one financial institution to another, both of which are involved in the lending of securities.
It is used to:
list specified securities available for lending by the lender or its agent
list specified securities no longer available for lending by the lender or its agent
request the borrowing of a specified security from the lender or its agent
notify the borrower or its agent of a partial or total return of the securities out on loan
notify the lender or its agent of a partial or total return of the securities borrowed
request the potential lender to hold the specified securities until further notice
confirm that specified securities are being held
request the potential borrower to confirm a securities loan or cancel a request to hold securities until further notice.