Swift Code is a standard format of Bank Identifier Codes (BIC) and it is unique identification code for a particular bank. These codes are used when transferring money between banks, particularly for international wire transfers. Banks also used the codes for exchanging other messages between them.
The Legal Entity Identifier (LEI) is unique global identifier of legal entities participating in financial transactions. These can be individuals, companies or government entities that participate in financial transaction. The identifier is used in reporting to financial regulators and all financial companies and funds are required to have an LEI. The identifier is formatted as a 20-character, alpha-numeric code based on the ISO 17442 standard developed by the International Organization for Standardization (ISO).