diff --git a/knowledge_base/failing_job_examples/resources/invalid_configuration.job.yml b/knowledge_base/failing_job_examples/resources/invalid_configuration.job.yml
index 71cdf3c..e311969 100644
--- a/knowledge_base/failing_job_examples/resources/invalid_configuration.job.yml
+++ b/knowledge_base/failing_job_examples/resources/invalid_configuration.job.yml
@@ -9,7 +9,7 @@ resources:
       max_concurrent_runs: 1
       parameters:
         - name: batch_size
-          default: "0"
+          default: "250"
       tasks:
         - task_key: validate_configuration
           max_retries: 0
diff --git a/knowledge_base/failing_job_examples/src/invalid_configuration.py b/knowledge_base/failing_job_examples/src/invalid_configuration.py
index 51ea9fd..9b60ff4 100644
--- a/knowledge_base/failing_job_examples/src/invalid_configuration.py
+++ b/knowledge_base/failing_job_examples/src/invalid_configuration.py
@@ -1,14 +1,24 @@
 # Databricks notebook source
-batch_size_value = dbutils.widgets.get("batch_size")
+def parse_positive_batch_size(value):
+    """Parse *value* as a positive integer batch size.
+
+    Raises ValueError with a descriptive message if *value* cannot be
+    converted to an integer or is not greater than zero.
+    """
+    try:
+        batch_size = int(value)
+    except ValueError:
+        raise ValueError(
+            f"Invalid job configuration: batch_size must be an integer, found {value!r}"
+        ) from None
+
+    if batch_size <= 0:
+        raise ValueError(
+            f"Invalid job configuration: batch_size must be greater than zero, found {batch_size}"
+        )
 
-try:
-    batch_size = int(batch_size_value)
-except ValueError:
-    raise ValueError(
-        f"Invalid job configuration: batch_size must be an integer, found {batch_size_value!r}"
-    ) from None
-
-if batch_size <= 0:
-    raise ValueError(
-        f"Invalid job configuration: batch_size must be greater than zero, found {batch_size}"
-    )
+    return batch_size
+
+
+batch_size_value = dbutils.widgets.get("batch_size")
+batch_size = parse_positive_batch_size(batch_size_value)