[This is preliminary documentation and subject to change.]
The numeric language ID.
Set on the command line.
Advertised as a product property, this value is used to apply the correct language transform in the case of a multi-language product. .
0.
The PRODUCTLANGUAGE property is applied only during the installation or advertisement of a product. Since the installer must use the same language for later maintenance of the product, the PRODUCTLANGUAGE property cannot be set in maintenance mode.