diff --git a/packages/elastic_agent/data_stream/apm_server_metrics/fields/beat-fields.yml b/packages/elastic_agent/data_stream/apm_server_metrics/fields/beat-fields.yml
index a05085d3d3fc..c70253bf1b51 100644
--- a/packages/elastic_agent/data_stream/apm_server_metrics/fields/beat-fields.yml
+++ b/packages/elastic_agent/data_stream/apm_server_metrics/fields/beat-fields.yml
@@ -500,3 +500,25 @@
                   description: >
                     Number of write errors
 
+    - name: output
+      type: group
+      fields:
+        - name: elasticsearch
+          type: group
+          fields:
+            - name: bulk_requests
+              type: group
+              fields:
+                - name: available
+                  type: long
+                - name: completed
+                  type: long
+            - name: indexers
+              type: group
+              fields:
+                - name: active
+                  type: long
+                - name: created
+                  type: long
+                - name: destroyed
+                  type: long