Resource: List of Approved Locale Codes
It is important for admins to use these only these codes when adding locales to CampaignDrive; because these are a foundational part of locales, using an incorrect code could cause the system to be unavailable.
For English (US), use en_US
For French (CA), use fr_CA
For German (GER), use de_DE
For French (FR), use fr_FR
For Swedish (SE), use sv_SE
For Spanish (US), use es_US