slackapi · deepunyk · Aug 8, 2026 · srtaalej · Aug 10, 2026
@@ -70,4 +70,23 @@ app.command('/ticket', async ({ ack, body, client, logger }) => {
     logger.error(error);
   }
 });
-```
+```
+
+### Making input blocks optional
+
+Set `optional: true` on the enclosing `input` block when users should be able to submit the view without providing a value. This setting applies to the element inside the block, including select menus such as `multi_external_select`; the element itself does not need an `optional` field.
+
-Set `optional: true` on the enclosing `input` block when users should be able to submit the view without providing a value. This setting applies to the element inside the block, including select menus such as `multi_external_select`; the element itself does not need an `optional` field.
+Set `optional: true` on the enclosing `input` block when users should be able to submit the view without providing a value. This setting applies to elements inside the block, including select menus such as `multi_external_select`; the element itself does not need an `optional` field.
-Set `optional: true` on the enclosing `input` block when users should be able to submit the view without providing a value. This setting applies to the element inside the block, including select menus such as `multi_external_select`; the element itself does not need an `optional` field.
+Set `optional: true` on the enclosing `input` block when users should be able to submit the view without providing a value. This setting applies to elements inside the block, including select menus such as `multi_external_select`; the element itself does not need an `optional` field.
+```javascript
+{
+  type: 'input',
+  optional: true,
+  label: {
+    type: 'plain_text',
+    text: 'Choose projects'
+  },
+  element: {
+    type: 'multi_external_select',
+    action_id: 'projects'
+  }
+}
+```