The "Lightweight MLS" is implemented in the R12.1.3 application and we have Greek, Spanish and Portuguese as languages. I have also run the TLS (Language Synchronisation) scripts and we are able to see the languages in the instance.
Now I have to apply few SR related patches in the current environment. All the patches specified in the SR have corresponding NLS. My question is as Greek, Spanish and Portuguese languages have already been enabled in the environment, also TLS patches have been applied, so now along with generic patch do I also need to apply any NLS patch for the all 3 languages in the current environment?