appsettings.json

{
  "Logging": {
    "LogLevel": {
      "Default": "Information",
      "Microsoft.AspNetCore": "Warning"
    }
  },
  "AllowedHosts": "*",
  "QuickBooks": {
    "ClientId": "YOUR_CLIENT_ID",
    "ClientSecret": "YOUR_CLIENT_SECRET",
    "RedirectUri": "https://your-redirect-uri.com/api/oauth/callback",
    "DiscoveryDocument": "https://appcenter.intuit.com/api/v1/connection/oauth2",
    "BaseUrl": "https://sandbox-quickbooks.api.intuit.com",
    "GraphQLEndpoint": "https://public.api.intuit.com/2020-04/graphql",
    "ProductionBaseUrl": "https://quickbooks.api.intuit.com",
    "ProductionGraphQLEndpoint": "https://qb.api.intuit.com/graphql",
    "Environment": "production",
    "MinorVersion": 75,
    "CustomFieldScopes": [
      "app-foundations.custom-field-definitions.read",
      "app-foundations.custom-field-definitions",
      "com.intuit.quickbooks.accounting"
    ]
  }
}