Supported Languages for Composer Lightning Component UI
Conga Composer Lightning Component user interface supports dynamic translation for German, French, Dutch, Polish, and Spanish, in addition to English as a default language. It automatically translates to German, French, Dutch, Polish, or Spanish for the Salesforce Users based on their local language set in Salesforce.
You must have a minimum Conga Composer version 8.198-Longs installed in your Salesforce org to leverage German, French, Dutch, Polish, and Spanish dynamic translations.