diff --git a/docs/how-it-works/HighCheckoutErrorRate.rst b/docs/how-it-works/HighCheckoutErrorRate.rst
new file mode 100644
index 000000000..98f220a61
--- /dev/null
+++ b/docs/how-it-works/HighCheckoutErrorRate.rst
@@ -0,0 +1,14 @@
+Troubleshooting runbook: HighCheckoutErrorRate
+##################################################
+
+This alert fires when the error rate on checkout requests is high
+
+Troubleshooting steps
+----------------------
+
+1. Check the account-service workload logs for errors
+2. Verify that the nginx-deployment is in running state, and doesn't have and related issues
+   investigate if this workload has any issue
+3. Check that the redis workload is in running state, and doesn't have and related issues. investigate if this workload has any issue
+
+If any of the above has error, this is most likely the issue