diff --git a/packages/shared/src/repairs.ts b/packages/shared/src/repairs.ts
index ef31f2c..02ce3c7 100644
--- a/packages/shared/src/repairs.ts
+++ b/packages/shared/src/repairs.ts
@@ -25,16 +25,8 @@ export const LogRepairRequest = z
         path: ['hostId'],
       });
     }
-    const hasModel =
-      v.brokenPartModelId !== undefined ||
-      (v.brokenMpn !== undefined && v.brokenManufacturerId !== undefined);
-    if (!hasModel) {
-      ctx.addIssue({
-        code: z.ZodIssueCode.custom,
-        message: 'Provide brokenPartModelId or both brokenMpn and brokenManufacturerId',
-        path: ['brokenPartModelId'],
-      });
-    }
+    // Model fields are only required when the broken serial isn't already in Vector. The
+    // server resolves the serial before demanding them — see services/repairs.ts.
   });
 export type LogRepairRequest = z.infer<typeof LogRepairRequest>;