Commerce has a restriction on reusing keywords for multiple languages in the same store. However, you may want to share the URL keywords between multiple languages. For example, if you have US English and Canadian English (ex. en_US, en_CA), you may want to have the same keywords between both languages. To do this, you will need to do the following (replacing en_US/en_CA with your scenario):
- Create URL keywords for en_US. Do not create any URL keywords for en_CA.
- In your store's JSPs, check if the locale is en_CA. If so, when creating the wcf:url tag, set urlLangId = -1 (en_US languageId).
This will result in both en_US and en_CA sharing the same URL keywords.