diff --git a/tailbone/views/inventory.py b/tailbone/views/inventory.py
index 80bb5578..d4492bff 100644
--- a/tailbone/views/inventory.py
+++ b/tailbone/views/inventory.py
@@ -2,7 +2,7 @@
 ################################################################################
 #
 #  Rattail -- Retail Software Framework
-#  Copyright © 2010-2017 Lance Edgar
+#  Copyright © 2010-2018 Lance Edgar
 #
 #  This file is part of Rattail.
 #
@@ -36,13 +36,44 @@ from rattail.time import localtime
 from rattail.gpc import GPC
 from rattail.util import pretty_quantity
 
+import colander
 import formalchemy as fa
 import formencode as fe
 
 from tailbone import forms
+from tailbone.views import MasterView3 as MasterView
 from tailbone.views.batch import BatchMasterView2 as BatchMasterView
 
 
+class InventoryAdjustmentReasonsView(MasterView):
+    """
+    Master view for inventory adjustment reasons.
+    """
+    model_class = model.InventoryAdjustmentReason
+    route_prefix = 'invadjust_reasons'
+    url_prefix = '/inventory-adjustment-reasons'
+
+    grid_columns = [
+        'code',
+        'description',
+    ]
+
+    def configure_form(self, f):
+        super(InventoryAdjustmentReasonsView, self).configure_form(f)
+
+        # code
+        f.set_validator('code', self.unique_code)
+
+    def unique_code(self, node, value):
+        query = self.Session.query(model.InventoryAdjustmentReason)\
+                            .filter(model.InventoryAdjustmentReason.code == value)
+        if self.editing:
+            reason = self.get_instance()
+            query = query.filter(model.InventoryAdjustmentReason.uuid != reason.uuid)
+        if query.count():
+            raise colander.Invalid(node, "Code must be unique")
+
+
 class InventoryBatchView(BatchMasterView):
     """
     Master view for inventory batches.
@@ -391,4 +422,5 @@ class InventoryForm(forms.Schema):
 
 
 def includeme(config):
+    InventoryAdjustmentReasonsView.defaults(config)
     InventoryBatchView.defaults(config)