diff --git a/qqq-backend-core/src/main/java/com/kingsrook/qqq/backend/core/instances/QInstanceValidator.java b/qqq-backend-core/src/main/java/com/kingsrook/qqq/backend/core/instances/QInstanceValidator.java
index 725b9c4d..8d901b30 100644
--- a/qqq-backend-core/src/main/java/com/kingsrook/qqq/backend/core/instances/QInstanceValidator.java
+++ b/qqq-backend-core/src/main/java/com/kingsrook/qqq/backend/core/instances/QInstanceValidator.java
@@ -75,6 +75,7 @@ import com.kingsrook.qqq.backend.core.model.metadata.tables.AssociatedScript;
 import com.kingsrook.qqq.backend.core.model.metadata.tables.Association;
 import com.kingsrook.qqq.backend.core.model.metadata.tables.ExposedJoin;
 import com.kingsrook.qqq.backend.core.model.metadata.tables.QFieldSection;
+import com.kingsrook.qqq.backend.core.model.metadata.tables.QSupplementalTableMetaData;
 import com.kingsrook.qqq.backend.core.model.metadata.tables.QTableMetaData;
 import com.kingsrook.qqq.backend.core.model.metadata.tables.Tier;
 import com.kingsrook.qqq.backend.core.model.metadata.tables.UniqueKey;
@@ -86,6 +87,7 @@ import com.kingsrook.qqq.backend.core.model.metadata.tables.cache.CacheUseCase;
 import com.kingsrook.qqq.backend.core.utils.CollectionUtils;
 import com.kingsrook.qqq.backend.core.utils.StringUtils;
 import com.kingsrook.qqq.backend.core.utils.ValueUtils;
+import com.kingsrook.qqq.backend.core.utils.lambdas.UnsafeLambda;
 
 
 /*******************************************************************************
@@ -492,6 +494,11 @@ public class QInstanceValidator
             validateTableRecordSecurityLocks(qInstance, table);
             validateTableAssociations(qInstance, table);
             validateExposedJoins(qInstance, joinGraph, table);
+
+            for(QSupplementalTableMetaData supplementalTableMetaData : CollectionUtils.nonNullMap(table.getSupplementalMetaData()).values())
+            {
+               supplementalTableMetaData.validate(qInstance, table, this);
+            }
          });
       }
    }
@@ -1765,20 +1772,6 @@ public class QInstanceValidator
 
 
 
-   /*******************************************************************************
-    **
-    *******************************************************************************/
-   @FunctionalInterface
-   interface UnsafeLambda
-   {
-      /*******************************************************************************
-       **
-       *******************************************************************************/
-      void run() throws Exception;
-   }
-
-
-
    /*******************************************************************************
     **
     *******************************************************************************/
diff --git a/qqq-backend-core/src/main/java/com/kingsrook/qqq/backend/core/model/metadata/tables/QSupplementalTableMetaData.java b/qqq-backend-core/src/main/java/com/kingsrook/qqq/backend/core/model/metadata/tables/QSupplementalTableMetaData.java
index d0dc48e4..6c36388b 100644
--- a/qqq-backend-core/src/main/java/com/kingsrook/qqq/backend/core/model/metadata/tables/QSupplementalTableMetaData.java
+++ b/qqq-backend-core/src/main/java/com/kingsrook/qqq/backend/core/model/metadata/tables/QSupplementalTableMetaData.java
@@ -22,6 +22,7 @@
 package com.kingsrook.qqq.backend.core.model.metadata.tables;
 
 
+import com.kingsrook.qqq.backend.core.instances.QInstanceValidator;
 import com.kingsrook.qqq.backend.core.model.metadata.QInstance;
 
 
@@ -69,4 +70,16 @@ public abstract class QSupplementalTableMetaData
       // noop in base class //
       ////////////////////////
    }
+
+
+
+   /*******************************************************************************
+    **
+    *******************************************************************************/
+   public void validate(QInstance qInstance, QTableMetaData tableMetaData, QInstanceValidator qInstanceValidator)
+   {
+      ////////////////////////
+      // noop in base class //
+      ////////////////////////
+   }
 }
diff --git a/qqq-backend-core/src/main/java/com/kingsrook/qqq/backend/core/utils/lambdas/UnsafeLambda.java b/qqq-backend-core/src/main/java/com/kingsrook/qqq/backend/core/utils/lambdas/UnsafeLambda.java
new file mode 100644
index 00000000..f74ba61e
--- /dev/null
+++ b/qqq-backend-core/src/main/java/com/kingsrook/qqq/backend/core/utils/lambdas/UnsafeLambda.java
@@ -0,0 +1,37 @@
+/*
+ * QQQ - Low-code Application Framework for Engineers.
+ * Copyright (C) 2021-2022.  Kingsrook, LLC
+ * 651 N Broad St Ste 205 # 6917 | Middletown DE 19709 | United States
+ * contact@kingsrook.com
+ * https://github.com/Kingsrook/
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package com.kingsrook.qqq.backend.core.utils.lambdas;
+
+
+/*******************************************************************************
+ **
+ *******************************************************************************/
+@FunctionalInterface
+public interface UnsafeLambda
+{
+
+   /*******************************************************************************
+    **
+    *******************************************************************************/
+   void run() throws Exception;
+
+}