Merge pull request #97077 from DCtheGeek/dmc-bp-artifacts

Clarify use of artifacts

Author: PRMerger19

articles/governance/blueprints/reference/blueprint-functions.md

@@ -1,7 +1,7 @@
 ---
 title: Azure Blueprints functions
 description: Describes the functions available for use with blueprint artifacts in Azure Blueprints definitions and assignments.
-ms.date: 04/15/2019
+ms.date: 12/09/2019
 ms.topic: reference
 ---
 # Functions for use with Azure Blueprints
@@ -26,6 +26,12 @@ The following functions are supported:
 
 Returns an object of properties populated with that blueprint artifacts outputs.
 
+> [!NOTE]
+> The `artifacts()` function can't be used from inside a Resource Manager Template. The function can
+> only be used in the blueprint definition JSON or in the artifact JSON when managing the blueprint
+> with Azure PowerShell or REST API as part of
+> [Blueprints-as-code](https://github.com/Azure/azure-blueprints/blob/master/README.md).
+
 ### Parameters
 
 | Parameter | Required | Type | Description |