Previously, namescript would generate for Japanese names descriptions in non-Japanese languages like this:

japaneseFamilyName (nativeLabel)

Here, “nativeLabel” comes from the native label, which for Japanese names is the name in kanji. However, several Japanese names can share the same name in kanji (and would only differ in the kana), so Wikibase would sometimes report errors about ambiguous descriptions (several items with the same label and description). To fix this, the name in kana needs to be included as well:

japaneseFamilyName (nativeLabel, nameInKana)

This was implemented in 4337eeaddf, with a follow-up in 04463d1915 to use the correct comma separator message.