Prior to submitting your product catalog to Google Base, consider indexing the relevant custom options for each of your products. You can specify option attributes in one of the following formats:
Attributes from namespaces other than g: and c: are not allowed.
To index your product properties with regular Google Base attributes:
For regular Plesk Sitebuilder options, such as Apparel size, and Shoe size (US, UK, EU), the corresponding Google Base attribute (g:size) is specified automatically by Plesk Sitebuilder.
Note: Specify the full RSS attribute name, without the brackets (for example, g:made_in).
For a list of Google Base tags, refer to Appendix. Most Common Google Base Attributes. The full list of option tags is available on the Google Base web site.
If you do not find the attribute that properly describes your product option in the list of regular Google Base attributes, you can create a custom one. For detailed information on creating custom Google Base tags, refer to Google Base web site.
Note: The possibility to specify data type for an option is not supported by Plesk Sitebuilder. You specify the namespace prefix and the tag name only; the data type is set to its default value - String, which allows inputting any arbitrary text string containing any characters (except for line breaks).