[Modify AWS RDS MSSQL Parameters]
AWS RDS MSSQL cannot be modified existing parameters,
and can only be set when a new RDS is created.
To modify parameters, such as Language Set of an existing RDS,
you must create a new RDS, set it to the desired parameters, and then migrate the DB.
This document is based on March 2020.
Please leave a comment if document needs an update.
Bespin Global Cloud Support Team