Update stream-analytics-use-reference-data.md

Author: sidramadoss

articles/stream-analytics/stream-analytics-use-reference-data.md

@@ -39,7 +39,7 @@ To configure your reference data, you first need to create an input that is of t
 |Storage Account   | The name of the storage account where your blobs are located. If it’s in the same subscription as your Stream Analytics Job, you can select it from the drop-down.   |
 |Storage Account Key   | The secret key associated with the storage account. This gets automatically populated if the storage account is in the same subscription as your Stream Analytics job.   |
 |Storage Container   | Containers provide a logical grouping for blobs stored in the Microsoft Azure Blob service. When you upload a blob to the Blob service, you must specify a container for that blob.   |
-|Path Pattern   | The path used to locate your blobs within the specified container. Within the path, you may choose to specify one or more instances of the following 2 variables:<BR>{date}, {time}<BR>Example 1: products/{date}/{time}/product-list.csv<BR>Example 2: products/{date}/product-list.csv<BR>Example 3: product-list.csv<BR><br> If the blob doesn't exist in the specified path, the Stream Analytics job will wait indefinitely for the blob to become available.   |
+|Path Pattern   | This is a required property that is used to locate your blobs within the specified container. Within the path, you may choose to specify one or more instances of the following 2 variables:<BR>{date}, {time}<BR>Example 1: products/{date}/{time}/product-list.csv<BR>Example 2: products/{date}/product-list.csv<BR>Example 3: product-list.csv<BR><br> If the blob doesn't exist in the specified path, the Stream Analytics job will wait indefinitely for the blob to become available.   |
 |Date Format [optional]   | If you have used {date} within the Path Pattern that you specified, then you can select the date format in which your blobs are organized from the drop-down of supported formats.<BR>Example: YYYY/MM/DD, MM/DD/YYYY, etc.   |
 |Time Format [optional]   | If you have used {time} within the Path Pattern that you specified, then you can select the time format in which your blobs are organized from the drop-down of supported formats.<BR>Example: HH, HH/mm, or HH-mm.  |
 |Event Serialization Format   | To make sure your queries work the way you expect, Stream Analytics needs to know which serialization format you're using for incoming data streams. For Reference Data, the supported formats are CSV and JSON.  |