Update contentdefinitions.md

fixes https://github.com/MicrosoftDocs/azure-docs/issues/48214

Author: yoelhor

articles/active-directory-b2c/contentdefinitions.md

@@ -9,7 +9,7 @@ manager: celestedg
 ms.service: active-directory
 ms.workload: identity
 ms.topic: reference
-ms.date: 02/17/2020
+ms.date: 02/20/2020
 ms.author: mimart
 ms.subservice: B2C
 ---
@@ -66,7 +66,7 @@ The **ContentDefinition** element contains the following elements:
 | Element | Occurrences | Description |
 | ------- | ----------- | ----------- |
 | LoadUri | 1:1 | A string that contains the URL of the HTML5 page for the content definition. |
-| RecoveryUri | 1:1 | A string that contains the URL of the HTML page for displaying an error relating to the content definition. |
+| RecoveryUri | 1:1 | A string that contains the URL of the HTML page for displaying an error relating to the content definition. Not currently used, the value must be `~/common/default_page_error.html`. |
 | DataUri | 1:1 | A string that contains the relative URL of an HTML file that provides the user experience to invoke for the step. |
 | Metadata | 0:1 | A collection of key/value pairs that contains the metadata utilized by the content definition. |
 | LocalizedResourcesReferences | 0:1 | A collection of localized resources references. Use this element to customize the localization of a user interface and claims attribute. |