diff --git a/archreview/plans/R2-11-tagconfig-consolidation-plan.md.tasks.json b/archreview/plans/R2-11-tagconfig-consolidation-plan.md.tasks.json
index d952ba71..19647b38 100644
--- a/archreview/plans/R2-11-tagconfig-consolidation-plan.md.tasks.json
+++ b/archreview/plans/R2-11-tagconfig-consolidation-plan.md.tasks.json
@@ -3,7 +3,7 @@
   "lastUpdated": "2026-07-12",
   "tasks": [
     { "id": "T1",  "subject": "Golden TagConfig corpus + compose→encode→decode parity characterization test (Runtime.Tests, green on unmodified tree)", "status": "completed", "blockedBy": [] },
-    { "id": "T2",  "subject": "FullName-semantics characterization for EquipmentNodeWalker (Core.Tests) + DraftValidator Galaxy rule (Configuration.Tests)", "status": "pending", "blockedBy": [] },
+    { "id": "T2",  "subject": "FullName-semantics characterization for EquipmentNodeWalker (Core.Tests) + DraftValidator Galaxy rule (Configuration.Tests)", "status": "completed", "blockedBy": [] },
     { "id": "T3",  "subject": "TagConfigIntent + TagAlarmIntent in Commons/Types (TDD; port composer semantics verbatim + OpcUaServer ExtractTag* test tables)", "status": "pending", "blockedBy": [] },
     { "id": "T4",  "subject": "DeviceConfigIntent (TryExtractHost/NormalizeHost) in Commons/Types (TDD)", "status": "pending", "blockedBy": [] },
     { "id": "T5",  "subject": "AddressSpaceComposer swap: single TagConfigIntent.Parse per tag, delete 4 Extract* statics (P-1 parse-once)", "status": "pending", "blockedBy": ["T1", "T3"] },
diff --git a/tests/Core/ZB.MOM.WW.OtOpcUa.Configuration.Tests/DraftValidatorGalaxyFullNameCorpusTests.cs b/tests/Core/ZB.MOM.WW.OtOpcUa.Configuration.Tests/DraftValidatorGalaxyFullNameCorpusTests.cs
new file mode 100644
index 00000000..e4af659e
--- /dev/null
+++ b/tests/Core/ZB.MOM.WW.OtOpcUa.Configuration.Tests/DraftValidatorGalaxyFullNameCorpusTests.cs
@@ -0,0 +1,60 @@
+using Shouldly;
+using Xunit;
+using ZB.MOM.WW.OtOpcUa.Configuration.Entities;
+using ZB.MOM.WW.OtOpcUa.Configuration.Enums;
+using ZB.MOM.WW.OtOpcUa.Configuration.Validation;
+
+namespace ZB.MOM.WW.OtOpcUa.Configuration.Tests;
+
+/// <summary>
+///     Characterization net (R2-11) pinning the DraftValidator Galaxy rule's <em>explicit</em>-FullName
+///     semantics across the golden TagConfig corpus BEFORE the private FullName reader is delegated to
+///     <c>TagConfigIntent.Parse(...).ExplicitFullName</c>. Distinct from the walker/composer raw-blob
+///     fallback: <c>GalaxyTagMissingReference</c> fires whenever the TagConfig has no usable
+///     <em>explicit</em> string <c>FullName</c> — i.e. absent / non-string / whitespace / non-object /
+///     malformed — and does NOT fire only when a non-blank string FullName is present. Must be green on
+///     the unmodified tree and stay green through the swap.
+/// </summary>
+public sealed class DraftValidatorGalaxyFullNameCorpusTests
+{
+    [Theory]
+    // Present, non-blank string FullName → rule does NOT fire
+    [InlineData("{\"FullName\":\"X.Y\"}", false)]
+    [InlineData("{\"FullName\":\"A.B\",\"region\":\"Coils\"}", false)]
+    // Absent / non-string / whitespace / non-object / malformed → rule FIRES
+    [InlineData("{}", true)]
+    [InlineData("{\"region\":\"HoldingRegisters\"}", true)]
+    [InlineData("{\"FullName\":123}", true)]
+    [InlineData("{\"FullName\":\"   \"}", true)]
+    [InlineData("[1,2]", true)]
+    [InlineData("not json {", true)]
+    public void Galaxy_missing_reference_fires_iff_no_explicit_string_FullName(string tagConfig, bool shouldFire)
+    {
+        var draft = new DraftSnapshot
+        {
+            GenerationId = 1,
+            ClusterId = "c",
+            DriverInstances =
+            [
+                new DriverInstance
+                {
+                    DriverInstanceId = "d-galaxy", ClusterId = "c", NamespaceId = "ns-1",
+                    Name = "Galaxy", DriverType = "GalaxyMxGateway", DriverConfig = "{}",
+                },
+            ],
+            Tags =
+            [
+                new Tag
+                {
+                    TagId = "tag-galaxytag", DriverInstanceId = "d-galaxy", EquipmentId = "eq-1",
+                    Name = "galaxytag", FolderPath = null, DataType = "Float",
+                    AccessLevel = TagAccessLevel.Read, TagConfig = tagConfig,
+                },
+            ],
+        };
+
+        var fired = DraftValidator.Validate(draft)
+            .Any(e => e.Code == "GalaxyTagMissingReference" && e.Context == "tag-galaxytag");
+        fired.ShouldBe(shouldFire);
+    }
+}
diff --git a/tests/Core/ZB.MOM.WW.OtOpcUa.Core.Tests/OpcUa/EquipmentNodeWalkerFullNameCorpusTests.cs b/tests/Core/ZB.MOM.WW.OtOpcUa.Core.Tests/OpcUa/EquipmentNodeWalkerFullNameCorpusTests.cs
new file mode 100644
index 00000000..ae74919d
--- /dev/null
+++ b/tests/Core/ZB.MOM.WW.OtOpcUa.Core.Tests/OpcUa/EquipmentNodeWalkerFullNameCorpusTests.cs
@@ -0,0 +1,36 @@
+using Shouldly;
+using Xunit;
+using ZB.MOM.WW.OtOpcUa.Core.OpcUa;
+
+namespace ZB.MOM.WW.OtOpcUa.Core.Tests.OpcUa;
+
+/// <summary>
+///     Characterization net (R2-11) pinning <see cref="EquipmentNodeWalker.ExtractFullName"/>'s
+///     raw-blob-fallback semantics across the golden TagConfig corpus BEFORE the parser is delegated to
+///     <c>TagConfigIntent.Parse</c>. The walker's FullName copy falls back to the raw blob whenever the
+///     input is not a JSON object carrying a string <c>FullName</c> (blank / non-object / malformed /
+///     absent / non-string). Whitespace + non-string-property values are returned verbatim (not trimmed).
+///     Must be green on the unmodified tree and stay green through the swap.
+/// </summary>
+public sealed class EquipmentNodeWalkerFullNameCorpusTests
+{
+    [Theory]
+    // object with a string FullName → the FullName string (verbatim, incl. whitespace)
+    [InlineData("{\"FullName\":\"X.Y\"}", "X.Y")]
+    [InlineData("{\"FullName\":\"   \"}", "   ")]
+    [InlineData("{\"FullName\":\"A.B\",\"region\":\"Coils\",\"address\":5}", "A.B")]
+    // blank → raw blob (IsNullOrWhiteSpace short-circuit)
+    [InlineData("   ", "   ")]
+    // non-object root → raw blob
+    [InlineData("[1,2]", "[1,2]")]
+    // malformed JSON → raw blob
+    [InlineData("not json {", "not json {")]
+    // object, FullName absent → raw blob
+    [InlineData("{\"region\":\"HoldingRegisters\",\"address\":5}", "{\"region\":\"HoldingRegisters\",\"address\":5}")]
+    // object, FullName present but non-string → raw blob
+    [InlineData("{\"FullName\":123}", "{\"FullName\":123}")]
+    public void ExtractFullName_falls_back_to_raw_blob_except_for_string_FullName(string tagConfig, string expected)
+    {
+        EquipmentNodeWalker.ExtractFullName(tagConfig).ShouldBe(expected);
+    }
+}