125137 Import data documentation changes

Author: v-ajajvanu

articles/healthcare-apis/fhir/configure-import-data.md

@@ -60,7 +60,7 @@ For this step, you need to get the request URL and JSON body:
 3. Select **JSON View**.
 4. Select the API version as **2022-06-01** or later.
 
-To specify the Azure storage account in JSON view, you need to use the [REST API](/rest/api/healthcareapis/services/create-or-update) to update the FHIR service.
+To specify the Azure storage account in JSON view which is in **READ** mode, you need to use the [REST API](/rest/api/healthcareapis/services/create-or-update) to update the FHIR service.
 
 [![Screenshot of selections for opening the JSON view.](media/bulk-import/fhir-json-view.png)](media/bulk-import/fhir-json-view.png#lightbox)
 

articles/healthcare-apis/fhir/import-data.md

@@ -72,6 +72,8 @@ To achieve the best performance with the `import` operation, consider these fact
 
 - The data must be in the same tenant as the FHIR service.
 
+- To obtain an access token, see [Access Token](using-rest-client.md)
+
 
 ### Make a call
 
@@ -288,6 +290,27 @@ Here are the error messages that occur if the `import` operation fails, along wi
 
 **Solution:** Reduce the size of your data or consider Azure API for FHIR, which has a higher storage limit.
 
+#### 423 Locked
+
+**Behavior:** The `import` operation fails and returns `423 Locked`. The response body includes this content:
+
+```json
+{
+    "resourceType": "OperationOutcome",
+    "id": "13876ec9-3170-4525-87ec-9e165052d70d",
+    "issue": [
+        {
+            "severity": "error",
+            "code": "processing",
+            "diagnostics": "import operation failed for reason: Service is locked for initial import mode."
+        }
+    ]
+}
+```
+**Cause:** The FHIR Service is configured with Initial import mode which will blocked other operations.
+
+**Solution:** Switch the FHIR service's Initial import mode off, or select Incremental mode.
+
 ## Limitations
 - The maximum number of files allowed for each `import` operation is 10,000.
 - The number of files ingested in the FHIR server with same lastUpdated field value upto milliseconds can't exceed beyond 10,000.