diff --git a/rundetection/ingestion/extracts.py b/rundetection/ingestion/extracts.py
index 477c9b1..26c28aa 100644
--- a/rundetection/ingestion/extracts.py
+++ b/rundetection/ingestion/extracts.py
@@ -52,8 +52,18 @@ def osiris_extract(job_request: JobRequest, dataset: Any) -> JobRequest:
 
     freq_6 = float(dataset.get("selog").get("freq6").get("value_log").get("value")[0])
     freq_10 = float(dataset.get("selog").get("freq10").get("value_log").get("value")[0])
+
+    # Accounting for floating point errors
+    max_value = max(freq_6, freq_10)
+    difference = abs(freq_6 - freq_10)
+    if difference > max_value * 0.01:
+        raise ReductionMetadataError(
+            "Frequency 6 and 10 are not within 1% of each other. Osiris reduction is not possible"
+        )
     if freq_6 != freq_10:
-        raise ReductionMetadataError("Frequency 6 and 10 do not match. Osiris reduction is not possible")
+        freq_6 = round(freq_6)
+        freq_10 = round(freq_10)
+
     job_request.additional_values["freq6"] = freq_6
     job_request.additional_values["freq10"] = freq_10
 
diff --git a/rundetection/run_detection.py b/rundetection/run_detection.py
index 129164a..fbf50fb 100644
--- a/rundetection/run_detection.py
+++ b/rundetection/run_detection.py
@@ -16,6 +16,7 @@
 from pika import BlockingConnection, ConnectionParameters, PlainCredentials  # type: ignore
 from pika.adapters.blocking_connection import BlockingChannel  # type: ignore
 
+from rundetection.exceptions import ReductionMetadataError
 from rundetection.ingestion.ingest import ingest
 from rundetection.job_requests import JobRequest
 from rundetection.specifications import InstrumentSpecification
@@ -105,6 +106,9 @@ def process_messages(channel: BlockingChannel, notification_queue: SimpleQueue[J
             process_message(body.decode(), notification_queue)
             logger.info("Acking message %s", method_frame.delivery_tag)
             channel.basic_ack(method_frame.delivery_tag)
+        except ReductionMetadataError as exc:
+            logger.exception("Problem with metadata, cannot reduce, skipping message", exc_info=exc)
+            channel.basic_ack(method_frame.delivery_tag)
         # pylint: disable = broad-exception-caught
         except AttributeError:  # If the message frame or body is missing attributes required e.g. the delivery tag
             pass
diff --git a/test/ingestion/test_extracts.py b/test/ingestion/test_extracts.py
index fe392fc..faed658 100644
--- a/test/ingestion/test_extracts.py
+++ b/test/ingestion/test_extracts.py
@@ -192,6 +192,35 @@ def test_osiris_extract(_, job_request):
     assert job_request.additional_values["cycle_string"] == "some string"
 
 
+@patch("rundetection.ingestion.extracts.get_cycle_string_from_path", return_value="some string")
+def test_osiris_extract_non_matching_freqs_within_error_boundary(_, job_request):
+    """Test Osiris extract"""
+    dataset = {
+        "selog": {
+            "phase6": {"value": (1221.0,)},
+            "phase10": {"value": (1221.0,)},
+            "freq6": {"value_log": {"value": (6.0,)}},
+            "freq10": {"value_log": {"value": (5.999,)}},
+        },
+        "instrument": {
+            "dae": {
+                "time_channels_1": {"time_of_flight": (10.0, 100.0)},
+                "time_channels_2": {"time_of_flight": (12.1, 121.0)},
+            }
+        },
+    }
+    osiris_extract(job_request, dataset)
+    assert job_request.additional_values["freq10"] == 6
+    assert job_request.additional_values["freq6"] == 6
+    assert job_request.additional_values["tcb_detector_min"] == 10.0
+    assert job_request.additional_values["tcb_detector_max"] == 100.0
+    assert job_request.additional_values["tcb_monitor_min"] == 12.1
+    assert job_request.additional_values["tcb_monitor_max"] == 121.0
+    assert job_request.additional_values["phase6"] == 1221.0
+    assert job_request.additional_values["phase10"] == 1221.0
+    assert job_request.additional_values["cycle_string"] == "some string"
+
+
 @patch("rundetection.ingestion.extracts.get_cycle_string_from_path", return_value="some string")
 def test_osiris_extract_raises_on_bad_frequencies(job_request):
     """Test correct exception raised when freq6 and freq10 do not match"""
diff --git a/test/test_run_detection.py b/test/test_run_detection.py
index d35ad44..cc44d3c 100644
--- a/test/test_run_detection.py
+++ b/test/test_run_detection.py
@@ -13,6 +13,7 @@
 
 import pytest
 
+from rundetection.exceptions import ReductionMetadataError
 from rundetection.ingestion.ingest import JobRequest
 from rundetection.run_detection import (
     process_message,
@@ -124,7 +125,7 @@ def test_process_messages(mock_process):
 
 
 @patch("rundetection.run_detection.process_message")
-def test_process_messages_raises_still_acks(mock_process):
+def test_process_messages_raises_exception_nacks(mock_process):
     """
     Test messages are still acked after exception in processing
     :param mock_process: Mock Process messages function
@@ -144,6 +145,27 @@ def test_process_messages_raises_still_acks(mock_process):
     channel.basic_nack.assert_called_once_with(method_frame.delivery_tag)
 
 
+@patch("rundetection.run_detection.process_message")
+def test_process_messages_raises_metadataerror_still_acks(mock_process):
+    """
+    Test messages are still acked after exception in processing
+    :param mock_process: Mock Process messages function
+    :return: None
+    """
+    channel = MagicMock()
+    method_frame = MagicMock()
+    body = "message_body".encode()
+    channel.consume.return_value = [(method_frame, None, body)]
+    notification_queue = SimpleQueue()
+    mock_process.side_effect = ReductionMetadataError
+
+    process_messages(channel, notification_queue)
+
+    channel.consume.assert_called_once()
+    mock_process.assert_called_once_with(body.decode(), notification_queue)
+    channel.basic_ack.assert_called_once_with(method_frame.delivery_tag)
+
+
 @patch("rundetection.run_detection.process_message")
 def test_process_messages_does_not_ack_attribute_error(_):
     """