Removed the provision for default scope represented as empty string. This introduces some ambiguities in the Security Requirement Object that would need to be addressed.

Author: tedepstein

versions/3.0.3.md

@@ -3286,13 +3286,13 @@ Field Name | Type | Applies To | Description
 <a name="oauthFlowAuthorizationUrl"></a>authorizationUrl | `string` | `oauth2` (`"implicit"`, `"authorizationCode"`) | **REQUIRED**. The authorization URL to be used for this flow. This MUST be in the form of a URL.
 <a name="oauthFlowTokenUrl"></a>tokenUrl | `string` | `oauth2` (`"password"`, `"clientCredentials"`, `"authorizationCode"`) | **REQUIRED**. The token URL to be used for this flow. This MUST be in the form of a URL.
 <a name="oauthFlowRefreshUrl"></a>refreshUrl | `string` | `oauth2` | The URL to be used for obtaining refresh tokens. This MUST be in the form of a URL.
-<a name="oauthFlowScopes"></a>scopes | Map[`string`, `string`] | `oauth2` | **REQUIRED**. The available scopes for the OAuth2 security scheme. A map between the scope name and a short description for it. If scope is optional, the map MAY include an entry with an empty string as its key to represent the default scope. If scope is not used in the authorization scheme, the map MAY be empty.
+<a name="oauthFlowScopes"></a>scopes | Map[`string`, `string`] | `oauth2` | **REQUIRED**. The available scopes for the OAuth2 security scheme. A map between the scope name and a short description for it. If scope is not required or not specified in the authorization scheme, the map MAY be empty.
 
 This object MAY be extended with [Specification Extensions](#specificationExtensions).
 
 ##### OAuth Flow Object Examples
 
-###### OAuth Flows with Required Scope
+###### OAuth Flows with Defined Scopes
 
 ```JSON
 {
@@ -3333,7 +3333,7 @@ flows:
       read:pets: read your pets 
 ```
 
-###### OAuth Flows with Unspecified and Optional Scope
+###### OAuth Flows with Optional or Unspecified Scope
 
 ```JSON
 {
@@ -3346,10 +3346,7 @@ flows:
     "authorizationCode": {
       "authorizationUrl": "https://example.com/api/oauth/dialog",
       "tokenUrl": "https://example.com/api/oauth/token",
-      "scopes": {
-        "write:pets": "modify pets in your account",
-        "": "default scope provides read-only access"
-      }
+      "scopes": {}
     }
   }
 }
@@ -3364,9 +3361,7 @@ flows:
   authorizationCode:
     authorizationUrl: https://example.com/api/oauth/dialog
     tokenUrl: https://example.com/api/oauth/token
-    scopes:
-      write:pets: modify pets in your account
-      "" : default scope provides read-only access
+    scopes: {}
 ```
 
 #### <a name="securityRequirementObject"></a>Security Requirement Object