Merge pull request #164493 from mumian/0702-bicep-limits

add Bicep limitations

Author: v-shmck

articles/azure-resource-manager/bicep/overview.md

@@ -2,7 +2,7 @@
 title: Bicep language for deploying Azure resources
 description: Describes the Bicep language for deploying infrastructure to Azure. It provides an improved authoring experience over using JSON to develop templates.
 ms.topic: conceptual
-ms.date: 06/03/2021
+ms.date: 07/02/2021
 ---
 
 # What is Bicep?
@@ -103,6 +103,29 @@ They continue to function exactly as they always have. You don't need to make an
 
 When you're ready, you can [decompile the JSON files to Bicep](./decompile.md).
 
+## Known limitations
+
+- No support for single-line object and arrays. For example, `['a', 'b', 'c']` is not supported. For more information, see [Arrays](/data-types#arrays), [Objects](/data-types#objects).
+- No support for breaking long lines into multiple lines.  For example:
+
+    ```bicep
+    resource sa 'Microsoft.Storage/storageAccounts@2019-06-01' = if (newOrExisting == 'new') {
+      ...
+    }
+    ```
+
+    Can't be written as:
+
+    ```bicep
+    resource sa 'Microsoft.Storage/storageAccounts@2019-06-01' =
+        if (newOrExisting == 'new') {
+          ...
+        }
+    ```
+
+- No support for the concept of apiProfile which is used to map a single apiProfile to a set apiVersion for each resource type.
+- No support for user-defined functions (UDFs).
+
 ## Next steps
 
 Get started with the [Quickstart](./quickstart-create-bicep-use-visual-studio-code.md).