The Liv-ex Wine Identification Number (LWIN) - a unique seven digit numerical code - serves as a universal wine identifier for the wine trade. 

LWIN helps to avoid problems associated with complex product names that make transactions prone to error and delay. 

Read 'L-WIN: a common language for fine wine' by Liv-ex's Head of Data, Neil Taylor, to learn more about the role and value of universal identification in the fine wine industry (French and Chinese are available).

Each L-WIN refers to the wine itself (i.e. the producer and brand, grape or vineyard). The first six numbers of the code represent each wine’s unique identifier, while the seventh number is a “check digit” that minimises input errors.

Additional information, such as the vintage, pack and bottle size can be appended to the L-WIN in a standard format, or added as separate fields.

The L-WIN standards for including additional data are:

• L-WIN: 1234567 – Example winery, Cabernet
• L-WIN-11: 12345672012 – Example Winery, Cabenet, 2012
• L-WIN-16: 1234567201200750 – Example Winery, Cabernet, 2012, 750ml bottle size*
• L-WIN-18: 123456720121200750 – Example Winery, Cabernet, 2012, 12 bottles of 750ml

*All bottles sizes are expressed in millilitres in a five digit format.

Please email the Liv-ex data team if you would like a copy of the LWIN database or the LWIN Licence Agreement.