diff --git a/src/OpenTelemetry.Exporter.OneCollector/Internal/Serialization/CommonSchemaJsonSerializationState.cs b/src/OpenTelemetry.Exporter.OneCollector/Internal/Serialization/CommonSchemaJsonSerializationState.cs
index b33f5e7b6a..0af597fc82 100644
--- a/src/OpenTelemetry.Exporter.OneCollector/Internal/Serialization/CommonSchemaJsonSerializationState.cs
+++ b/src/OpenTelemetry.Exporter.OneCollector/Internal/Serialization/CommonSchemaJsonSerializationState.cs
@@ -228,7 +228,9 @@ private bool AddFieldToLookupForExtension(
             out var fieldInformation))
         {
             OneCollectorExporterEventSource.Log.AttributeDropped(this.itemType, extensionName, "Extension field name was not specified");
-            return false;
+
+            // Note: Return true here to allow other fields to potentially succeed.
+            return true;
         }
 
         return this.AddFieldToLookupForExtension(ref keyLookup, fieldInformation!, fieldValue);
@@ -243,6 +245,8 @@ private bool AddFieldToLookupForExtension(
         if (keyCount >= MaxNumberOfExtensionValuesPerKey)
         {
             OneCollectorExporterEventSource.Log.AttributeDropped(this.itemType, fieldInformation.ExtensionName!, "Extension field limit reached");
+
+            // Note: Return false here to prevent other fields from being attempted when we know they will also fail.
             return false;
         }
 
diff --git a/test/OpenTelemetry.Exporter.OneCollector.Tests/CommonSchemaJsonSerializationStateTests.cs b/test/OpenTelemetry.Exporter.OneCollector.Tests/CommonSchemaJsonSerializationStateTests.cs
index 7a70eccb54..4e2083bd42 100644
--- a/test/OpenTelemetry.Exporter.OneCollector.Tests/CommonSchemaJsonSerializationStateTests.cs
+++ b/test/OpenTelemetry.Exporter.OneCollector.Tests/CommonSchemaJsonSerializationStateTests.cs
@@ -151,7 +151,11 @@ public void AddExtensionAttributeMixedFieldAndPropertyTest()
         state.AddExtensionAttribute(new KeyValuePair<string, object?>("ext.foo", new List<KeyValuePair<string, object?>> { new KeyValuePair<string, object?>(" foo.field2 ", 2) }));
         state.AddExtensionAttribute(new KeyValuePair<string, object?>("ext.foo .foo_field3 ", 3));
 
-        state.AddExtensionAttribute(new KeyValuePair<string, object?>("ext. bar ", new Dictionary<string, object?> { ["bar_field1"] = 1 }));
+        state.AddExtensionAttribute(new KeyValuePair<string, object?>("ext. bar ", new Dictionary<string, object?>
+        {
+            ["   "] = 99, // Note: This will be dropped but the second entry will be added.
+            ["bar_field1"] = 1,
+        }));
         state.AddExtensionAttribute(new KeyValuePair<string, object?>("ext. bar .bar.field2", 2));
         state.AddExtensionAttribute(new KeyValuePair<string, object?>("ext.bar.bar_field3", 3));