diff --git a/schemas/api/pis-object.json b/schemas/api/pis-object.json
index 9043bae..c3ef42a 100644
--- a/schemas/api/pis-object.json
+++ b/schemas/api/pis-object.json
@@ -35,6 +35,20 @@
                 "pattern": "^[a-zA-Z0-9]+$"
             },
             "description": "List of TIPLOC Codes"
+        },
+        "skip": {
+            "type": "object",
+            "properties": {
+                "skip": {
+                    "type": "integer",
+                    "description": "Number of stops to skip"
+                },
+                "position": {
+                    "type": "string",
+                    "enum": ["head", "tail"],
+                    "description": "Position of stops to be skipped, either 'head' or 'tail'"
+                }
+            }
         }
     },
     "required": ["code"],