diff --git a/monitoring/prober/scd/resources/op_400_version1.json b/monitoring/prober/scd/resources/op_400_version1.json
deleted file mode 100644
index d12de6b5be..0000000000
--- a/monitoring/prober/scd/resources/op_400_version1.json
+++ /dev/null
@@ -1,64 +0,0 @@
-{
-  "extents": [
-    {
-      "volume": {
-        "outline_circle": {
-          "center": {
-            "lng": -118.456,
-            "lat": 34.123
-          },
-          "radius": {
-            "value": 300.183,
-            "units": "M"
-          }
-        },
-        "outline_polygon": {
-          "vertices": [
-            {
-              "lng": 9.980582850817164,
-              "lat": 9.98038769564864
-            },
-            {
-              "lng": 9.980390688694534,
-              "lat": 9.980585843863055
-            },
-            {
-              "lng": 10.019861937948736,
-              "lat": 10.02005709311726
-            },
-            {
-              "lng": 10.020054117178084,
-              "lat": 10.01985896200956
-            }
-          ]
-        },
-        "altitude_lower": {
-          "value": -12.191999609856008,
-          "reference": "W84",
-          "units": "M"
-        },
-        "altitude_upper": {
-          "value": 18.287999414784014,
-          "reference": "W84",
-          "units": "M"
-        }
-      },
-      "time_start": {
-        "value": "2019-06-30T15:58:00.00Z",
-        "format": "RFC3339"
-      },
-      "time_end": {
-        "value": "2030-06-30T16:02:00.00Z",
-        "format": "RFC3339"
-      }
-    }
-  ],
-  "old_version": 1,
-  "key": [],
-  "state": "Activated",
-  "uss_base_url": "https://localhost:8080",
-  "new_subscription": {
-    "uss_base_url": "https://localhost:8080",
-    "notify_for_constraints": false
-  }
-}
diff --git a/monitoring/prober/scd/resources/op_area_too_large_put.json b/monitoring/prober/scd/resources/op_area_too_large_put.json
deleted file mode 100644
index b14f22b198..0000000000
--- a/monitoring/prober/scd/resources/op_area_too_large_put.json
+++ /dev/null
@@ -1,58 +0,0 @@
-{
-  "extents": [
-    {
-      "volume": {
-        "outline_polygon": {
-          "vertices": [
-            {
-              "lng": 9.980582850817164,
-              "lat": 9.98038769564864
-            },
-            {
-              "lng": 9.980390688694534,
-              "lat": 9.980585843863055
-            },
-            {
-              "lng": 110.019861937948736,
-              "lat": 10.02005709311726
-            },
-            {
-              "lng": 10.020054117178084,
-              "lat": 10.01985896200956
-            },
-            {
-              "lng": 9.980582850817164,
-              "lat": 9.98038769564864
-            }
-          ]
-        },
-        "altitude_lower": {
-          "value": -12.191999609856008,
-          "reference": "W84",
-          "units": "M"
-        },
-        "altitude_upper": {
-          "value": 18.287999414784014,
-          "reference": "W84",
-          "units": "M"
-        }
-      },
-      "time_start": {
-        "value": "2019-06-30T15:58:00.00Z",
-        "format": "RFC3339"
-      },
-      "time_end": {
-        "value": "2030-06-30T16:02:00.00Z",
-        "format": "RFC3339"
-      }
-    }
-  ],
-  "old_version": 0,
-  "key": [],
-  "state": "Ended",
-  "uss_base_url": "https://localhost:8080",
-  "new_subscription": {
-    "uss_base_url": "https://localhost:8080",
-    "notify_for_constraints": false
-  }
-}
diff --git a/monitoring/prober/scd/resources/op_bad_lat_lon_range.json b/monitoring/prober/scd/resources/op_bad_lat_lon_range.json
deleted file mode 100644
index b3d1b7a8b0..0000000000
--- a/monitoring/prober/scd/resources/op_bad_lat_lon_range.json
+++ /dev/null
@@ -1,58 +0,0 @@
-{
-  "extents": [
-    {
-      "volume": {
-        "outlinePolygon": {
-          "vertices": [
-            {
-              "lng": 9.980582850817164,
-              "lat": 9.98038769564864
-            },
-            {
-              "lng": 9.980390688694534,
-              "lat": 9.980585843863055
-            },
-            {
-              "lng": 10.019861937948736,
-              "lat": 110.02005709311726
-            },
-            {
-              "lng": 10.020054117178084,
-              "lat": 10.01985896200956
-            },
-            {
-              "lng": 9.980582850817164,
-              "lat": 9.98038769564864
-            }
-          ]
-        },
-        "altitudeLower": {
-          "value": -12.191999609856008,
-          "reference": "W84",
-          "units": "M"
-        },
-        "altitudeUpper": {
-          "value": 18.287999414784014,
-          "reference": "W84",
-          "units": "M"
-        }
-      },
-      "timeStart": {
-        "value": "2019-06-30T15:58:00.00Z",
-        "format": "RFC3339"
-      },
-      "timeEnd": {
-        "value": "2030-06-30T16:02:00.00Z",
-        "format": "RFC3339"
-      }
-    }
-  ],
-  "oldVersion": 0,
-  "key": [],
-  "state": "Ended",
-  "ussBaseUrl": "https://localhost:8080",
-  "new_subscription": {
-    "uss_base_url": "https://localhost:8080",
-    "notify_for_constraints": false
-  }
-}
diff --git a/monitoring/prober/scd/resources/op_bad_time_format.json b/monitoring/prober/scd/resources/op_bad_time_format.json
deleted file mode 100644
index 52cdb3f641..0000000000
--- a/monitoring/prober/scd/resources/op_bad_time_format.json
+++ /dev/null
@@ -1,58 +0,0 @@
-{
-  "extents": [
-    {
-      "volume": {
-        "outlinePolygon": {
-          "vertices": [
-            {
-              "lng": 9.980582850817164,
-              "lat": 9.98038769564864
-            },
-            {
-              "lng": 9.980390688694534,
-              "lat": 9.980585843863055
-            },
-            {
-              "lng": 10.019861937948736,
-              "lat": 10.02005709311726
-            },
-            {
-              "lng": 10.020054117178084,
-              "lat": 10.01985896200956
-            },
-            {
-              "lng": 9.980582850817164,
-              "lat": 9.98038769564864
-            }
-          ]
-        },
-        "altitudeLower": {
-          "value": -12.191999609856008,
-          "reference": "W84",
-          "units": "M"
-        },
-        "altitudeUpper": {
-          "value": 18.287999414784014,
-          "reference": "W84",
-          "units": "M"
-        }
-      },
-      "timeStart": {
-        "value": "2019-06-30T15:58:00.00Z",
-        "format": "RFC3339"
-      },
-      "timeEnd": {
-        "value": "2030-06-30T16:02:00.00Z",
-        "format": "RFC3330"
-      }
-    }
-  ],
-  "oldVersion": 0,
-  "key": [],
-  "state": "Ended",
-  "ussBaseUrl": "https://localhost:8080",
-  "new_subscription": {
-    "uss_base_url": "https://localhost:8080",
-    "notify_for_constraints": false
-  }
-}
diff --git a/monitoring/prober/scd/resources/op_bad_volume.json b/monitoring/prober/scd/resources/op_bad_volume.json
deleted file mode 100644
index 45ba33435d..0000000000
--- a/monitoring/prober/scd/resources/op_bad_volume.json
+++ /dev/null
@@ -1,231 +0,0 @@
-{
-  "extents": [
-    {
-      "volume": {
-        "outline_circle": {
-          "center": {
-            "lng": -117.1035655786647,
-            "lat": 32.59415886402617
-          },
-          "radius": {
-            "value": 300.183,
-            "units": "M"
-          }
-        },
-        "outline_polygon": {
-          "vertices": [
-            {
-              "lng": -117.1035655786647,
-              "lat": 32.59415886402617
-            },
-            {
-              "lng": -117.1038398819344,
-              "lat": 32.59415886402617
-            },
-            {
-              "lng": -117.1038398819344,
-              "lat": 32.64920727813973
-            },
-            {
-              "lng": -117.1035655786647,
-              "lat": 32.64920727813973
-            }
-          ]
-        },
-        "altitude_lower": {
-          "value": -7.827263749527558,
-          "reference": "W84",
-          "units": "M"
-        },
-        "altitude_upper": {
-          "value": 114.09273234903256,
-          "reference": "W84",
-          "units": "M"
-        }
-      },
-      "time_start": {
-        "value": "2020-06-09T16:58:00.00Z",
-        "format": "RFC3339"
-      },
-      "time_end": {
-        "value": "2020-06-10T17:02:00.00Z",
-        "format": "RFC3339"
-      }
-    },
-    {
-      "volume": {
-        "outline_polygon": {
-          "vertices": [
-            {
-              "lng": -117.07235209637365,
-              "lat": 32.629403155814224
-            },
-            {
-              "lng": -117.07227677467183,
-              "lat": 32.62913940035541
-            },
-            {
-              "lng": -117.15071909262814,
-              "lat": 32.61019036953776
-            },
-            {
-              "lng": -117.15079458449262,
-              "lat": 32.61045408389095
-            }
-          ]
-        },
-        "altitude_lower": {
-          "value": 98.85273283671255,
-          "reference": "W84",
-          "units": "M"
-        },
-        "altitude_upper": {
-          "value": 114.09273234903256,
-          "reference": "W84",
-          "units": "M"
-        }
-      },
-      "time_start": {
-        "value": "1969-12-31T15:58:00.00Z",
-        "format": "RFC3339"
-      },
-      "time_end": {
-        "value": "1969-12-31T16:02:00.00Z",
-        "format": "RFC3339"
-      }
-    },
-    {
-      "volume": {
-        "outline_polygon": {
-          "vertices": [
-            {
-              "lng": -117.09038826289287,
-              "lat": 32.63060966167485
-            },
-            {
-              "lng": -117.09026347832622,
-              "lat": 32.630365389882776
-            },
-            {
-              "lng": -117.15717622635013,
-              "lat": 32.60141106631151
-            },
-            {
-              "lng": -117.15730113575759,
-              "lat": 32.601655284082824
-            }
-          ]
-        },
-        "altitude_lower": {
-          "value": 98.85273283671255,
-          "reference": "W84",
-          "units": "M"
-        },
-        "altitude_upper": {
-          "value": 114.09273234903256,
-          "reference": "W84",
-          "units": "M"
-        }
-      },
-      "time_start": {
-        "value": "2020-06-09T16:58:00.00Z",
-        "format": "RFC3339"
-      },
-      "time_end": {
-        "value": "2020-06-09T17:02:00.00Z",
-        "format": "RFC3339"
-      }
-    },
-    {
-      "volume": {
-        "outline_polygon": {
-          "vertices": [
-            {
-              "lng": -117.1102585196023,
-              "lat": 32.63712150700819
-            },
-            {
-              "lng": -117.11003035210928,
-              "lat": 32.636969253183054
-            },
-            {
-              "lng": -117.15104910529122,
-              "lat": 32.58489223521358
-            },
-            {
-              "lng": -117.15127729146461,
-              "lat": 32.5850444653223
-            }
-          ]
-        },
-        "altitude_lower": {
-          "value": -7.827263749527558,
-          "reference": "W84",
-          "units": "M"
-        },
-        "altitude_upper": {
-          "value": 114.09273234903256,
-          "reference": "W84",
-          "units": "M"
-        }
-      },
-      "time_start": {
-        "value": "2020-06-11T16:58:00.00Z",
-        "format": "RFC3339"
-      },
-      "time_end": {
-        "value": "2020-06-12T17:02:00.00Z",
-        "format": "RFC3339"
-      }
-    },
-    {
-      "volume": {
-        "outline_polygon": {
-          "vertices": [
-            {
-              "lng": -117.13297510795468,
-              "lat": 32.58037888894311
-            },
-            {
-              "lng": -117.13324941122436,
-              "lat": 32.58037888894311
-            },
-            {
-              "lng": -117.13324941122436,
-              "lat": 32.635427303056666
-            },
-            {
-              "lng": -117.13297510795468,
-              "lat": 32.635427303056666
-            }
-          ]
-        },
-        "altitude_lower": {
-          "value": -20.01926335938357,
-          "reference": "W84",
-          "units": "M"
-        },
-        "altitude_upper": {
-          "value": 7.412735762792458,
-          "reference": "W84",
-          "units": "M"
-        }
-      },
-      "time_start": {
-        "value": "2020-06-12T16:58:00.00Z",
-        "format": "RFC3339"
-      },
-      "time_end": {
-        "value": "2030-06-13T17:02:00.00Z",
-        "format": "RFC3339"
-      }
-    }
-  ],
-  "key": [],
-  "state": "Accepted",
-  "uss_base_url": "https://localhost:8080",
-  "new_subscription": {
-    "uss_base_url": "https://localhost:8080",
-    "notify_for_constraints": true
-  }
-}
diff --git a/monitoring/prober/scd/resources/op_end_time_past.json b/monitoring/prober/scd/resources/op_end_time_past.json
deleted file mode 100644
index c9dfff7df7..0000000000
--- a/monitoring/prober/scd/resources/op_end_time_past.json
+++ /dev/null
@@ -1,58 +0,0 @@
-{
-  "extents": [
-    {
-      "volume": {
-        "outlinePolygon": {
-          "vertices": [
-            {
-              "lng": 9.980582850817164,
-              "lat": 9.98038769564864
-            },
-            {
-              "lng": 9.980390688694534,
-              "lat": 9.980585843863055
-            },
-            {
-              "lng": 10.019861937948736,
-              "lat": 10.02005709311726
-            },
-            {
-              "lng": 10.020054117178084,
-              "lat": 10.01985896200956
-            },
-            {
-              "lng": 9.980582850817164,
-              "lat": 9.98038769564864
-            }
-          ]
-        },
-        "altitudeLower": {
-          "value": -12.191999609856008,
-          "reference": "W84",
-          "units": "M"
-        },
-        "altitudeUpper": {
-          "value": 18.287999414784014,
-          "reference": "W84",
-          "units": "M"
-        }
-      },
-      "timeStart": {
-        "value": "2020-06-30T15:58:00.00Z",
-        "format": "RFC3339"
-      },
-      "timeEnd": {
-        "value": "2019-06-30T16:02:00.00Z",
-        "format": "RFC3339"
-      }
-    }
-  ],
-  "oldVersion": 0,
-  "key": [],
-  "state": "Accepted",
-  "ussBaseUrl": "https://localhost:8080",
-  "new_subscription": {
-    "uss_base_url": "https://localhost:8080",
-    "notify_for_constraints": false
-  }
-}
diff --git a/monitoring/prober/scd/resources/op_uss_base_url_non_tls.json b/monitoring/prober/scd/resources/op_uss_base_url_non_tls.json
deleted file mode 100644
index 2faf5aec6b..0000000000
--- a/monitoring/prober/scd/resources/op_uss_base_url_non_tls.json
+++ /dev/null
@@ -1,58 +0,0 @@
-{
-  "extents": [
-    {
-      "volume": {
-        "outlinePolygon": {
-          "vertices": [
-            {
-              "lng": 9.980582850817164,
-              "lat": 9.98038769564864
-            },
-            {
-              "lng": 9.980390688694534,
-              "lat": 9.980585843863055
-            },
-            {
-              "lng": 10.019861937948736,
-              "lat": 10.02005709311726
-            },
-            {
-              "lng": 10.020054117178084,
-              "lat": 10.01985896200956
-            },
-            {
-              "lng": 9.980582850817164,
-              "lat": 9.98038769564864
-            }
-          ]
-        },
-        "altitudeLower": {
-          "value": -12.191999609856008,
-          "reference": "W84",
-          "units": "M"
-        },
-        "altitudeUpper": {
-          "value": 18.287999414784014,
-          "reference": "W84",
-          "units": "M"
-        }
-      },
-      "timeStart": {
-        "value": "2020-06-30T15:58:00.00Z",
-        "format": "RFC3339"
-      },
-      "timeEnd": {
-        "value": "2030-06-30T16:02:00.00Z",
-        "format": "RFC3339"
-      }
-    }
-  ],
-  "oldVersion": 0,
-  "key": [],
-  "state": "Accepted",
-  "uss_base_url": "http://localhost:8080",
-  "new_subscription": {
-    "uss_base_url": "https://localhost:8080",
-    "notify_for_constraints": false
-  }
-}
diff --git a/monitoring/prober/scd/test_operation_references_error_cases.py b/monitoring/prober/scd/test_operation_references_error_cases.py
index 8b6dbaeae7..3ae2efabfd 100644
--- a/monitoring/prober/scd/test_operation_references_error_cases.py
+++ b/monitoring/prober/scd/test_operation_references_error_cases.py
@@ -64,15 +64,6 @@ def test_op_ref_incorrect_altitude_ref(scd_api, scd_session):
     assert resp.status_code == 400, resp.content
 
 
-@for_api_versions(scd.API_0_3_17)
-@default_scope(SCOPE_SC)
-def test_op_uss_base_url_non_tls(ids, scd_api, scd_session):
-    with open("./scd/resources/op_uss_base_url_non_tls.json") as f:
-        req = json.load(f)
-    resp = scd_session.put(f"/operational_intent_references/{ids(OP_TYPE)}", json=req)
-    assert resp.status_code == 400, resp.content
-
-
 @for_api_versions(scd.API_0_3_17)
 @default_scope(SCOPE_SC)
 def test_op_bad_subscription_id(ids, scd_api, scd_session):
@@ -101,15 +92,6 @@ def test_op_new_and_existing_subscription(ids, scd_api, scd_session):
     assert resp.status_code == 400, resp.content
 
 
-@for_api_versions(scd.API_0_3_17)
-@default_scope(SCOPE_SC)
-def test_op_end_time_past(ids, scd_api, scd_session):
-    with open("./scd/resources/op_end_time_past.json") as f:
-        req = json.load(f)
-    resp = scd_session.put(f"/operational_intent_references/{ids(OP_TYPE)}", json=req)
-    assert resp.status_code == 400, resp.content
-
-
 @for_api_versions(scd.API_0_3_17)
 @default_scope(SCOPE_SC)
 def test_op_already_exists(ids, scd_api, scd_session):
@@ -131,51 +113,6 @@ def test_op_already_exists(ids, scd_api, scd_session):
     assert resp.status_code == 404, resp.content
 
 
-@for_api_versions(scd.API_0_3_17)
-@default_scope(SCOPE_SC)
-def test_op_400_version1(ids, scd_api, scd_session):
-    with open("./scd/resources/op_400_version1.json") as f:
-        req = json.load(f)
-    resp = scd_session.put(f"/operational_intent_references/{ids(OP_TYPE)}", json=req)
-    assert resp.status_code == 400, resp.content
-
-
-@for_api_versions(scd.API_0_3_17)
-@default_scope(SCOPE_SC)
-def test_op_bad_lat_lon_range(ids, scd_api, scd_session):
-    with open("./scd/resources/op_bad_lat_lon_range.json") as f:
-        req = json.load(f)
-    resp = scd_session.put(f"/operational_intent_references/{ids(OP_TYPE)}", json=req)
-    assert resp.status_code == 400, resp.content
-
-
-@for_api_versions(scd.API_0_3_17)
-@default_scope(SCOPE_SC)
-def test_op_area_too_large_put(ids, scd_api, scd_session):
-    with open("./scd/resources/op_area_too_large_put.json") as f:
-        req = json.load(f)
-    resp = scd_session.put(f"/operational_intent_references/{ids(OP_TYPE)}", json=req)
-    assert resp.status_code == 400, resp.content
-
-
-@for_api_versions(scd.API_0_3_17)
-@default_scope(SCOPE_SC)
-def test_op_bad_time_format(ids, scd_api, scd_session):
-    with open("./scd/resources/op_bad_time_format.json") as f:
-        req = json.load(f)
-    resp = scd_session.put(f"/operational_intent_references/{ids(OP_TYPE)}", json=req)
-    assert resp.status_code == 400, resp.content
-
-
-@for_api_versions(scd.API_0_3_17)
-@default_scope(SCOPE_SC)
-def test_op_bad_volume(ids, scd_api, scd_session):
-    with open("./scd/resources/op_bad_volume.json") as f:
-        req = json.load(f)
-    resp = scd_session.put(f"/operational_intent_references/{ids(OP_TYPE)}", json=req)
-    assert resp.status_code == 400, resp.content
-
-
 @for_api_versions(scd.API_0_3_17)
 @default_scope(SCOPE_SC)
 def test_op_repeated_requests(ids, scd_api, scd_session):
@@ -200,15 +137,6 @@ def test_op_repeated_requests(ids, scd_api, scd_session):
     assert resp.status_code == 200, resp.content
 
 
-@for_api_versions(scd.API_0_3_17)
-@default_scope(SCOPE_SC)
-def test_op_invalid_id(scd_api, scd_session):
-    with open("./scd/resources/op_request_1.json") as f:
-        req = json.load(f)
-    resp = scd_session.put("/operational_intent_references/not_uuid_format", json=req)
-    assert resp.status_code == 400, resp.content
-
-
 @for_api_versions(scd.API_0_3_17)
 @default_scope(SCOPE_SC)
 def test_missing_conflicted_operation(ids, scd_api, scd_session):
diff --git a/monitoring/uss_qualifier/scenarios/astm/utm/dss/op_intent_ref_validation.md b/monitoring/uss_qualifier/scenarios/astm/utm/dss/op_intent_ref_validation.md
index 3134a40be6..bd03e81816 100644
--- a/monitoring/uss_qualifier/scenarios/astm/utm/dss/op_intent_ref_validation.md
+++ b/monitoring/uss_qualifier/scenarios/astm/utm/dss/op_intent_ref_validation.md
@@ -22,12 +22,31 @@ Ensures that a DSS properly validates the parameters of requests related to oper
 
 [`PlanningAreaResource`](../../../../resources/planning_area.py) describes the 3D volume in which operational intent references will be created.
 
+### problematically_big_area
+
+[`VolumeResource`](../../../../resources/volume.py) describing an area too big to be accepted by the DSS.
+
 ## Setup test case
 
 ### [Cleanup OIRs test step](./clean_workspace_op_intents.md)
 
 ## Creation validation test case
 
+### Attempt creation with invalid parameters test step
+
+This step attempts to create operational intent references with invalid parameters.
+
+#### ⚠️ Invalid ID is rejected check
+
+If the DSS does not reject with a 400 the creation of an operational intent reference with an ID that is not a valid UUID,
+it is in violation of the OpenAPI specification referenced by **[astm.f3548.v21.DSS0005,1](../../../../requirements/astm/f3548/v21.md)**.
+
+#### 🛑 Operational intent reference removed check
+
+If an operational intent reference was wrongly created by one of the previous attempts, it is removed.
+If it cannot be deleted when providing the proper ID and OVN, the DSS implementation is in violation of
+**[astm.f3548.v21.DSS0005,1](../../../../requirements/astm/f3548/v21.md)**.
+
 ### Attempt creation with invalid extents test step
 
 This step attempts to create operational intent references with invalid extents.
@@ -57,6 +76,27 @@ it is in violation of **[astm.f3548.v21.DSS0005,1](../../../../requirements/astm
 If the DSS does not reject with a 400 the creation of an operational intent reference for which the extents start after they end,
 it is in violation of **[astm.f3548.v21.DSS0005,1](../../../../requirements/astm/f3548/v21.md)**.
 
+#### ⚠️ Extents with invalid time format are rejected check
+
+If the DSS does not reject with a 400 the creation of an operational intent reference for which the extents use a time format other than `RFC3339`,
+it is in violation of the OpenAPI specification referenced by **[astm.f3548.v21.DSS0005,1](../../../../requirements/astm/f3548/v21.md)**.
+
+#### ⚠️ Extents with invalid coordinates are rejected check
+
+If the DSS does not reject with a 400 the creation of an operational intent reference for which the extents contain a vertex with a latitude outside of the valid range,
+it is in violation of **[astm.f3548.v21.DSS0005,1](../../../../requirements/astm/f3548/v21.md)**.
+
+#### ⚠️ Extents with a too large area are rejected check
+
+If the DSS does not reject with a 400 or a 413 the creation of an operational intent reference for which the extents cover an area too large,
+it is in violation of **[astm.f3548.v21.DSS0005,1](../../../../requirements/astm/f3548/v21.md)**.
+
+#### ⚠️ Extents with both circle and polygon outlines are rejected check
+
+If the DSS does not reject with a 400 the creation of an operational intent reference for which the extents define both a circle and a polygon outline,
+it is in violation of **[astm.f3548.v21.DSS0005,1](../../../../requirements/astm/f3548/v21.md)**.
+
+
 #### 🛑 Operational intent reference removed check
 
 If an operational intent reference was wrongly created by one of the previous attempts, it is removed.
diff --git a/monitoring/uss_qualifier/scenarios/astm/utm/dss/op_intent_ref_validation.py b/monitoring/uss_qualifier/scenarios/astm/utm/dss/op_intent_ref_validation.py
index 03ac614c32..8295046c45 100644
--- a/monitoring/uss_qualifier/scenarios/astm/utm/dss/op_intent_ref_validation.py
+++ b/monitoring/uss_qualifier/scenarios/astm/utm/dss/op_intent_ref_validation.py
@@ -1,4 +1,5 @@
 import json
+from copy import deepcopy
 from datetime import datetime, timedelta
 from typing import Any
 
@@ -12,6 +13,7 @@
 from uas_standards.astm.f3548.v21.constants import Scope
 
 from monitoring.monitorlib.fetch import QueryType, query_and_describe
+from monitoring.monitorlib.geo import Circle, Polygon
 from monitoring.monitorlib.ids import register_resource_type
 from monitoring.uss_qualifier.resources import PlanningAreaResource
 from monitoring.uss_qualifier.resources.astm.f3548.v21.dss import (
@@ -20,6 +22,7 @@
 )
 from monitoring.uss_qualifier.resources.communications import ClientIdentityResource
 from monitoring.uss_qualifier.resources.interuss.id_generator import IDGeneratorResource
+from monitoring.uss_qualifier.resources.volume import VolumeResource
 from monitoring.uss_qualifier.scenarios.astm.utm.dss import test_step_fragments
 from monitoring.uss_qualifier.scenarios.scenario import TestScenario
 from monitoring.uss_qualifier.suites.suite import ExecutionContext
@@ -37,6 +40,7 @@ def __init__(
         id_generator: IDGeneratorResource,
         client_identity: ClientIdentityResource,
         planning_area: PlanningAreaResource,
+        problematically_big_area: VolumeResource,
     ):
         super().__init__()
         self._dss = dss.get_instance(
@@ -48,6 +52,7 @@ def __init__(
         self._oir_id = id_generator.id_factory.make_id(self.OIR_TYPE)
         self._expected_manager = client_identity.subject()
         self._planning_area = planning_area
+        self._problematically_big_area = problematically_big_area
 
     def run(self, context: ExecutionContext):
         self.begin_test_scenario(context)
@@ -59,6 +64,9 @@ def run(self, context: ExecutionContext):
         self.end_test_case()
 
         self.begin_test_case("Creation validation")
+        self.begin_test_step("Attempt creation with invalid parameters")
+        self._attempt_creation_with_invalid_parameters()
+        self.end_test_step()
         self.begin_test_step("Attempt creation with invalid extents")
         self._attempt_creation_with_invalid_extents()
         self.end_test_step()
@@ -80,12 +88,18 @@ def _valid_params(
         )
         return json.loads(json.dumps(params))
 
-    def _attempt_invalid_creation(self, check_name: str, params: dict[str, Any]):
+    def _attempt_invalid_creation(
+        self,
+        check_name: str,
+        params: dict[str, Any],
+        oir_id: str | None = None,
+        expected_codes: tuple[int, ...] = (400,),
+    ):
         op = OPERATIONS[OperationID.CreateOperationalIntentReference]
         q = query_and_describe(
             self._dss.client,
             op.verb,
-            op.path.format(entityid=self._oir_id),
+            op.path.format(entityid=oir_id or self._oir_id),
             QueryType.F3548v21DSSCreateOperationalIntentReference,
             self._dss.participant_id,
             scope=Scope.StrategicCoordination,
@@ -93,9 +107,9 @@ def _attempt_invalid_creation(self, check_name: str, params: dict[str, Any]):
         )
         self.record_query(q)
         with self.check(check_name, self._pid) as check:
-            if q.status_code != 400:
+            if q.status_code not in expected_codes:
                 check.record_failed(
-                    summary=f"Expected 400, got {q.status_code}",
+                    summary=f"Expected {' or '.join(str(c) for c in expected_codes)}, got {q.status_code}",
                     query_timestamps=[q.request.timestamp],
                 )
         if q.status_code == 201:
@@ -105,6 +119,11 @@ def _attempt_invalid_creation(self, check_name: str, params: dict[str, Any]):
             if oir.ovn:
                 test_step_fragments.remove_op_intent(self, self._dss, oir.id, oir.ovn)
 
+    def _attempt_creation_with_invalid_parameters(self):
+        self._attempt_invalid_creation(
+            "Invalid ID is rejected", self._valid_params(), oir_id="not_uuid_format"
+        )
+
     def _attempt_creation_with_invalid_extents(self):
         params = self._valid_params()
         params["extents"] = params["extents"][0]
@@ -139,6 +158,48 @@ def _attempt_creation_with_invalid_extents(self):
             "Extents starting after they end are rejected", params
         )
 
+        params = self._valid_params()
+        params["extents"][0]["time_end"]["format"] = "RFC3330"
+        self._attempt_invalid_creation(
+            "Extents with invalid time format are rejected", params
+        )
+
+        planning_area_polygon = Polygon.from_latlng_coords(
+            self._planning_area.resolved_volume4d_with_times(
+                None, None
+            ).volume.s2_vertices()
+        )
+
+        params = self._valid_params()
+        polygon = deepcopy(planning_area_polygon)
+        polygon.vertices[0].lat = 110
+        params["extents"][0]["volume"].pop("outline_circle", None)
+        params["extents"][0]["volume"]["outline_polygon"] = polygon
+        self._attempt_invalid_creation(
+            "Extents with invalid coordinates are rejected", params
+        )
+
+        params = self._valid_params()
+        params["extents"][0]["volume"].pop("outline_circle", None)
+        params["extents"][0]["volume"]["outline_polygon"] = Polygon(
+            vertices=self._problematically_big_area.specification.vertices()
+        )
+        self._attempt_invalid_creation(
+            "Extents with a too large area are rejected",
+            params,
+            expected_codes=(400, 413),
+        )
+
+        params = self._valid_params()
+        vertex = planning_area_polygon.vertices[0]
+        params["extents"][0]["volume"]["outline_polygon"] = planning_area_polygon
+        params["extents"][0]["volume"]["outline_circle"] = Circle.from_meters(
+            vertex.lat, vertex.lng, 300
+        )
+        self._attempt_invalid_creation(
+            "Extents with both circle and polygon outlines are rejected", params
+        )
+
     def _clean_all_oirs(self):
         vol = self._planning_area.resolved_volume4d_with_times(None, None)
         test_step_fragments.cleanup_active_oirs(
diff --git a/monitoring/uss_qualifier/suites/astm/utm/dss_probing.yaml b/monitoring/uss_qualifier/suites/astm/utm/dss_probing.yaml
index d1cd862a4c..84e86b31be 100644
--- a/monitoring/uss_qualifier/suites/astm/utm/dss_probing.yaml
+++ b/monitoring/uss_qualifier/suites/astm/utm/dss_probing.yaml
@@ -38,6 +38,7 @@ actions:
         id_generator: id_generator
         client_identity: utm_client_identity
         planning_area: planning_area
+        problematically_big_area: problematically_big_area
   - test_scenario:
       scenario_type: scenarios.astm.utm.dss.CRSimple
       resources: