vendure/packages/core/src/api/schema/admin-api/global-settings.api.graphql

type Query {
    globalSettings: GlobalSettings!
}

type Mutation {
    updateGlobalSettings(input: UpdateGlobalSettingsInput!): UpdateGlobalSettingsResult!
}

input UpdateGlobalSettingsInput {
    availableLanguages: [LanguageCode!]
    trackInventory: Boolean
}

"""
Returned when the default LanguageCode of a Channel is no longer found in the `availableLanguages`
of the GlobalSettings
"""
type ChannelDefaultLanguageError implements ErrorResult {
    errorCode: ErrorCode!
    message: String!
    language: String!
    channelCode: String!
}

union UpdateGlobalSettingsResult = GlobalSettings | ChannelDefaultLanguageError