diff --git a/.github/instructions/lc0092-naming-pattern.instructions.md b/.github/instructions/lc0092-naming-pattern.instructions.md
index e84e3dd..dd4a65a 100644
--- a/.github/instructions/lc0092-naming-pattern.instructions.md
+++ b/.github/instructions/lc0092-naming-pattern.instructions.md
@@ -180,6 +180,7 @@ Invalid user-supplied patterns fail gracefully: `CompilePattern` catches `Argume
 **HasDiagnostic (9 cases):** ProcedureLowerCaseStart, VariableLowerCaseStart, VariableWithSpecialChars, ParameterLowerCaseStart, ReturnValueLowerCaseStart, ObjectLowerCaseStart, FieldWithSpecialChars, ActionLowerCaseStart, ControlLowerCaseStart.
 **NoDiagnostic (18 cases):** ProcedurePascalCase, VariablePascalCase, FieldWithLettersAndDigits, ObsoleteProcedure, TriggerMethod, InterfaceImplementingMethod, EventSubscriberPascalCase, EventSubscriberPlatformParams, EventSubscriberUserParams, ApiPageControlCamelCase, ActionAcceleratorKey, EnumValueBlankSpace, EnumValueLowerCaseStart, SingleLetterVariable, SingleLetterParameter, UnderscorePrefix, XRecVariable, XRecParameter, ParameterPascalCase.
 **HasDiagnosticWithCustomSettings (1 case):** EnumValueLowerCaseStartCustomSettings.
+**SchemaParity (1 case):** NamingTargetEnumMatchesSchemaPropertyNames.
 
 ## Phase 2 roadmap (not yet implemented)
 
diff --git a/.github/instructions/settings-schema.instructions.md b/.github/instructions/settings-schema.instructions.md
index 2c490e6..676ffcc 100644
--- a/.github/instructions/settings-schema.instructions.md
+++ b/.github/instructions/settings-schema.instructions.md
@@ -1,5 +1,5 @@
 ---
-applyTo: 'src/ALCops.Common/Settings/ALCopsSettings.cs'
+applyTo: 'src/**/{ALCopsSettings,alcops.schema,NamingPattern}*'
 ---
 
 # Settings Schema Synchronization
@@ -31,6 +31,14 @@ When you:
 | Add a new `NamingTarget` enum value | Add to the `propertyNames.enum` array in `NamingPatterns` |
 | Add/modify fields in `NamingPattern.cs` | Update the `NamingPattern` definition in `$defs` |
 
+## Required parity guard test
+
+For NamingPattern schema parity, the PR must include or update a test that validates `NamingPattern.NamingTarget` enum values against `NamingPatterns.propertyNames.enum` in `alcops.schema.json`.
+
+Minimum expectation:
+- Run `NamingTargetEnumMatchesSchemaPropertyNames` in `src/ALCops.LinterCop.Test/Rules/NamingPattern/NamingPatternSettings.cs`.
+- The test must fail when either side adds/removes a target without updating the other.
+
 ## Description format
 
 Each property description should follow this pattern:
diff --git a/src/ALCops.Common/Settings/alcops.schema.json b/src/ALCops.Common/Settings/alcops.schema.json
index c2d56c2..660a023 100644
--- a/src/ALCops.Common/Settings/alcops.schema.json
+++ b/src/ALCops.Common/Settings/alcops.schema.json
@@ -51,7 +51,10 @@
           "EventSubscriber",
           "EventDeclaration",
           "Variable",
+          "LocalVariable",
+          "GlobalVariable",
           "Parameter",
+          "VarParameter",
           "ReturnValue",
           "Object",
           "Field",
@@ -65,9 +68,10 @@
       }
     },
     "UseSequentialGuidScope": {
-      "type": "string",
-      "enum": ["AllGuidFields"],
-      "description": "Controls the scope of the sequential GUID check. When set to 'AllGuidFields', all CreateGuid() calls are flagged, not just those in primary key fields. Used by PC0029."
+      "type": ["string", "null"],
+      "enum": ["AllGuidFields", null],
+      "default": null,
+      "description": "Controls the scope of the sequential GUID check. When set to 'AllGuidFields', all CreateGuid() calls are flagged, not just those in primary key fields. Used by PC0029. Default: null"
     },
     "ToolTipAllowedPunctuations": {
       "type": "array",
diff --git a/src/ALCops.LinterCop.Test/Rules/NamingPattern/NamingPatternSettings.cs b/src/ALCops.LinterCop.Test/Rules/NamingPattern/NamingPatternSettings.cs
index 89479c0..ac74e37 100644
--- a/src/ALCops.LinterCop.Test/Rules/NamingPattern/NamingPatternSettings.cs
+++ b/src/ALCops.LinterCop.Test/Rules/NamingPattern/NamingPatternSettings.cs
@@ -1,4 +1,5 @@
 using RoslynTestKit;
+using System.Text.Json;
 using NamingPatternTarget = ALCops.LinterCop.Analyzers.NamingPattern.NamingTarget;
 using NamingPatternConfig = ALCops.LinterCop.Analyzers.NamingPattern.NamingPatternConfig;
 using NamingPatternSetting = ALCops.Common.Settings.NamingPattern;
@@ -67,6 +68,68 @@ public async Task InheritanceFallsBackToVariableWhenOnlyVariableHasOverride(
             Assert.That(actual, Is.EqualTo(expected));
         }
 
+        [Test]
+        public void NamingTargetEnumMatchesSchemaPropertyNames()
+        {
+            string repoRoot = FindRepositoryRoot();
+            string schemaPath = Path.Combine(repoRoot, "src", "ALCops.Common", "Settings", "alcops.schema.json");
+
+            Assert.That(File.Exists(schemaPath), Is.True, $"Schema file not found: {schemaPath}");
+
+            using JsonDocument document = JsonDocument.Parse(File.ReadAllText(schemaPath));
+            
+			JsonElement enumValues = document.RootElement
+                .GetProperty("properties")
+                .GetProperty("NamingPatterns")
+                .GetProperty("propertyNames")
+                .GetProperty("enum");
+
+            var schemaTargets = enumValues
+                .EnumerateArray()
+                .Where(item => item.ValueKind == JsonValueKind.String)
+                .Select(item => item.GetString())
+                .OfType<string>()
+                .ToHashSet(StringComparer.Ordinal);
+
+            var namingTargets = Enum.GetNames(typeof(NamingPatternTarget))
+                .ToHashSet(StringComparer.Ordinal);
+
+            var missingInSchema = namingTargets.Except(schemaTargets).OrderBy(name => name).ToArray();
+            var extraInSchema = schemaTargets.Except(namingTargets).OrderBy(name => name).ToArray();
+
+            Assert.Multiple(() =>
+            {
+                Assert.That(
+                    missingInSchema,
+                    Is.Empty,
+                    $"NamingTarget enum values missing in schema: {string.Join(", ", missingInSchema)}");
+
+                Assert.That(
+                    extraInSchema,
+                    Is.Empty,
+                    $"Schema contains unknown NamingPatterns targets: {string.Join(", ", extraInSchema)}");
+            });
+        }
+
+        private static string FindRepositoryRoot()
+        {
+            var current = new DirectoryInfo(Environment.CurrentDirectory);
+
+            while (current is not null)
+            {
+                if (File.Exists(Path.Combine(current.FullName, "ALCops.sln")))
+				{
+					return current.FullName;
+				}
+
+                current = current.Parent;
+            }
+
+            Assert.Fail("Could not locate repository root (ALCops.sln).");
+
+            return string.Empty;
+        }
+
         private static string AllowPatternFor(string targetName) => $"{targetName}_Allow";
         private static string DisallowPatternFor(string targetName) => $"{targetName}_Disallow";