<extension_key>/Configuration/TCA/Overrides/<table_name>.php
Extend Records Translation
Configure TCA l10n_mode prefixLangTitle so ns_t3ai can translate specific record fields.
ns_t3ai supports translation of specific fields of TCA records. It understands fields which need to be translated, only if their l10n_mode is set to prefixLangTitle.
For detecting translatable fields, ns_t3ai uses a DataHandler hook.
The following setup is needed, to get ns_t3ai work on your table: