diff --git a/src/Build/BackEnd/BuildManager/BuildSubmission.cs b/src/Build/BackEnd/BuildManager/BuildSubmission.cs
index 77def07e7bb..d03f4b9a0b5 100644
--- a/src/Build/BackEnd/BuildManager/BuildSubmission.cs
+++ b/src/Build/BackEnd/BuildManager/BuildSubmission.cs
@@ -78,14 +78,15 @@ private protected void ExecuteAsync(
         internal void CompleteResults(TResultData result)
         {
             ErrorUtilities.VerifyThrowArgumentNull(result, nameof(result));
-            ErrorUtilities.VerifyThrow(result.SubmissionId == SubmissionId,
-                "GraphBuildResult's submission id doesn't match GraphBuildSubmission's");
+            CheckResultValidForCompletion(result);
 
             BuildResult ??= result;
 
             CheckForCompletion();
         }
 
+        protected internal abstract void CheckResultValidForCompletion(TResultData result);
+
         protected internal abstract TResultData CreateFailedResult(Exception exception);
 
         internal override BuildResultBase CompleteResultsWithException(Exception exception)
@@ -207,7 +208,19 @@ protected internal override BuildResult CreateFailedResult(Exception exception)
                 "BuildRequest is not populated while reporting failed result.");
             return new(BuildRequest!, exception);
         }
-        
+
+        protected internal override void CheckResultValidForCompletion(BuildResult result)
+        {
+            // We verify that we got results from the same configuration, but not necessarily the same request, because we are
+            // rather flexible in how users are allowed to submit multiple requests for the same configuration.  In this case, the
+            // request id of the result will match the first request, even though it will contain results for all requests (including
+            // this one.)
+            if (result.ConfigurationId != BuildRequest?.ConfigurationId)
+            {
+                ErrorUtilities.ThrowInternalError("BuildResult configuration ({0}) doesn't match BuildRequest configuration ({1})",
+                    result.ConfigurationId, BuildRequest?.ConfigurationId);
+            }
+        }
 
         protected internal override void OnCompletition()
         {
diff --git a/src/Build/Graph/GraphBuildSubmission.cs b/src/Build/Graph/GraphBuildSubmission.cs
index 6e45cc0231d..a7e2243d5b1 100644
--- a/src/Build/Graph/GraphBuildSubmission.cs
+++ b/src/Build/Graph/GraphBuildSubmission.cs
@@ -62,6 +62,12 @@ public override GraphBuildResult Execute()
             return BuildResult!;
         }
 
+        protected internal override void CheckResultValidForCompletion(GraphBuildResult result)
+        {
+            ErrorUtilities.VerifyThrow(result.SubmissionId == SubmissionId,
+                "GraphBuildResult's submission id doesn't match GraphBuildSubmission's");
+        }
+
         protected internal override GraphBuildResult CreateFailedResult(Exception exception)
             => new(SubmissionId, exception);
     }