diff --git a/fusion_plating/fusion_plating_configurator/models/fp_part_catalog.py b/fusion_plating/fusion_plating_configurator/models/fp_part_catalog.py
index c2e6b0cc..272398be 100644
--- a/fusion_plating/fusion_plating_configurator/models/fp_part_catalog.py
+++ b/fusion_plating/fusion_plating_configurator/models/fp_part_catalog.py
@@ -131,6 +131,21 @@ class FpPartCatalog(models.Model):
     notes = fields.Html(string='Notes')
     active = fields.Boolean(string='Active', default=True)
 
+    certificate_requirement = fields.Selection(
+        [
+            ('inherit', 'Inherit from Customer'),
+            ('none', 'No Certificate'),
+            ('coc', 'CoC Only'),
+            ('coc_thickness', 'CoC + Thickness Report'),
+        ],
+        string='Certificate Requirement',
+        default='inherit',
+        required=True,
+        tracking=True,
+        help='Determines which quality documents ship with this part. '
+             '"Inherit" reads the customer\'s default on the partner form.',
+    )
+
     # ---- Direct-order defaults (Phase C — C4) ----
     x_fc_default_coating_config_id = fields.Many2one(
         'fp.coating.config',