diff --git a/include/RE/A/ActorMagicCaster.h b/include/RE/A/ActorMagicCaster.h
index 3318dad72..71868251c 100644
--- a/include/RE/A/ActorMagicCaster.h
+++ b/include/RE/A/ActorMagicCaster.h
@@ -47,7 +47,7 @@ namespace RE
 		void                       FinishCastImpl() override;                                                                                                                            // 07 - { return; }
 		void                       InterruptCastImpl(bool a_depleteEnergy) override;                                                                                                     // 08 - { return; }
 		void                       SpellCast(bool a_doCast, std::uint32_t a_arg2, MagicItem* a_spell) override;                                                                          // 09 - { return; }
-		bool                       CheckCast(MagicItem* a_spell, bool a_dualCast, float* a_alchStrength, MagicSystem::CannotCastReason* a_reason, bool a_useBaseValueForCost) override;  // 0A
+		bool                       CheckCast(MagicItem* a_spell, bool a_dualCast, float* a_effectStrength, MagicSystem::CannotCastReason* a_reason, bool a_useBaseValueForCost) override;  // 0A
 		TESObjectREFR*             GetCasterStatsObject() const override;                                                                                                                // 0B - { return actor; }
 		Actor*                     GetCasterAsActor() const override;                                                                                                                    // 0C - { return actor; }
 		NiNode*                    GetMagicNode() override;                                                                                                                              // 0E - { return magicNode; }
diff --git a/include/RE/I/InventoryUpdateData.h b/include/RE/I/InventoryUpdateData.h
index 0c1a8e769..dd96e9d7e 100644
--- a/include/RE/I/InventoryUpdateData.h
+++ b/include/RE/I/InventoryUpdateData.h
@@ -4,7 +4,9 @@
 
 namespace RE
 {
-	class InventoryUpdateData : public IUIMessageData
+	class TESBoundObject;
+
+    class InventoryUpdateData : public IUIMessageData
 	{
 	public:
 		inline static constexpr auto RTTI = RTTI_InventoryUpdateData;
@@ -12,9 +14,9 @@ namespace RE
 		~InventoryUpdateData() override = default;  // 00
 
 		// members
-		RefHandle     unk10;  // 10
-		std::uint32_t pad14;  // 14
-		TESForm*      unk18;  // 18
+		RefHandle       inventoryRef;  // 10
+		std::uint32_t   pad14;         // 14
+		TESBoundObject* updateObj;     // 18
 	};
 	static_assert(sizeof(InventoryUpdateData) == 0x20);
 }
diff --git a/include/RE/M/MagicCaster.h b/include/RE/M/MagicCaster.h
index 63df5cca6..3586862b3 100644
--- a/include/RE/M/MagicCaster.h
+++ b/include/RE/M/MagicCaster.h
@@ -52,7 +52,7 @@ namespace RE
 		virtual void                       FinishCastImpl();                                                                                                                                                                                // 07 - { return; }
 		virtual void                       InterruptCastImpl(bool a_depleteEnergy);                                                                                                                                                         // 08 - { return; }
 		virtual void                       SpellCast(bool a_doCast, std::uint32_t a_arg2, MagicItem* a_spell);                                                                                                                              // 09 - { return; }
-		virtual bool                       CheckCast(MagicItem* a_spell, bool a_dualCast, float* a_alchStrength, MagicSystem::CannotCastReason* a_reason, bool a_useBaseValueForCost);                                                      // 0A
+		virtual bool                       CheckCast(MagicItem* a_spell, bool a_dualCast, float* a_effectStrength, MagicSystem::CannotCastReason* a_reason, bool a_useBaseValueForCost);                                                    // 0A
 		virtual TESObjectREFR*             GetCasterStatsObject() const;                                                                                                                                                                    // 0B - { return 0; }
 		virtual Actor*                     GetCasterAsActor() const;                                                                                                                                                                        // 0C - { return 0; }
 		virtual TESObjectREFR*             GetCasterObjectReference(Actor** a_outCaster) const;                                                                                                                                             // 0D
diff --git a/include/RE/M/MagicSystem.h b/include/RE/M/MagicSystem.h
index a5190684d..2dbb0f53a 100644
--- a/include/RE/M/MagicSystem.h
+++ b/include/RE/M/MagicSystem.h
@@ -16,7 +16,8 @@ namespace RE
 			kItemCharge = 5,
 			kCastWhileShouting = 6,
 			kShoutWhileCasting = 7,
-			kShoutWhileRecovering = 8
+			kShoutWhileRecovering = 8,
+			kCustomReasonNoStart = 100,
 		};
 
 		enum class CastingSource
diff --git a/include/RE/S/SendUIMessage.h b/include/RE/S/SendUIMessage.h
new file mode 100644
index 000000000..12932922f
--- /dev/null
+++ b/include/RE/S/SendUIMessage.h
@@ -0,0 +1,17 @@
+#pragma once
+
+namespace RE
+{
+	class TESBoundObject;
+	class TESObjectREFR;
+	
+	namespace SendUIMessage
+	{
+		void SendInventoryUpdateMessage(TESObjectREFR* a_inventoryRef, const TESBoundObject* a_updateObj)
+		{
+			using func_t = decltype(&SendUIMessage::SendInventoryUpdateMessage);
+			static REL::Relocation<func_t> func{ RELOCATION_ID(51911, 52849) };
+			return func(a_inventoryRef, a_updateObj);
+		}
+	}
+}