diff --git a/src/Sdk/RSWebApi/RunServiceHttpClient.cs b/src/Sdk/RSWebApi/RunServiceHttpClient.cs
index 66bd08a98..bb1407706 100644
--- a/src/Sdk/RSWebApi/RunServiceHttpClient.cs
+++ b/src/Sdk/RSWebApi/RunServiceHttpClient.cs
@@ -253,11 +253,12 @@ namespace GitHub.Actions.RunService.WebApi
             return false;
         }
 
-        private static string Truncate(string errorBody)
+        internal static string Truncate(string errorBody)
         {
-            if (errorBody.Length > 100)
+            const int maxLength = 200;
+            if (errorBody.Length > maxLength)
             {
-                return errorBody.Substring(0, 100) + "[truncated]";
+                return errorBody.Substring(0, maxLength) + "[truncated]";
             }
 
             return errorBody;
diff --git a/src/Test/L0/Sdk/RSWebApi/RunServiceHttpClientL0.cs b/src/Test/L0/Sdk/RSWebApi/RunServiceHttpClientL0.cs
new file mode 100644
index 000000000..b4f3e54ac
--- /dev/null
+++ b/src/Test/L0/Sdk/RSWebApi/RunServiceHttpClientL0.cs
@@ -0,0 +1,20 @@
+using GitHub.Actions.RunService.WebApi;
+using Xunit;
+
+namespace GitHub.Actions.RunService.WebApi.Tests;
+
+public sealed class RunServiceHttpClientL0
+{
+    [Fact]
+    public void Truncate()
+    {
+        TestTruncate(string.Empty.PadLeft(199, 'a'), string.Empty.PadLeft(199, 'a'));
+        TestTruncate(string.Empty.PadLeft(200, 'a'), string.Empty.PadLeft(200, 'a'));
+        TestTruncate(string.Empty.PadLeft(201, 'a'), string.Empty.PadLeft(200, 'a') + "[truncated]");
+    }
+
+    private void TestTruncate(string errorBody, string expected)
+    {
+        Assert.Equal(expected, RunServiceHttpClient.Truncate(errorBody));
+    }
+}