diff --git a/py_mmd_tools/mmd_operations.py b/py_mmd_tools/mmd_operations.py
index 21663ec0..2913e15a 100644
--- a/py_mmd_tools/mmd_operations.py
+++ b/py_mmd_tools/mmd_operations.py
@@ -18,6 +18,8 @@
 import warnings
 import datetime_glob
 
+import urllib.parse
+
 
 def add_metadata_update_info(f, note, type="Minor modification"):
     """ Add update information """
@@ -34,15 +36,19 @@ def check_csw_catalog(ds_id, nc_file, urls, env, emsg=""):
     """Search for the dataset with id 'ds_id' in the CSW metadata
     catalog.
     """
+    payload = {
+        "service": "CSW",
+        "version": "2.0.2",
+        "request": "GetRepositoryItem",
+        "id": ds_id}
+
+    payload_str = urllib.parse.urlencode(payload, safe=":")
+
     ds_found_and_accessible = False
     res = requests.get(url=f"https://{urls[env]['csw']}/csw",
-                       params={
-                           "service": "CSW",
-                           "version": "2.0.2",
-                           "request": "GetRepositoryItem",
-                           "id": ds_id})
+                       params=payload_str)
     # TODO: check the data_access urls
-    if res.status_code == 200:
+    if res.status_code == 200 and "ExceptionText" not in res.text:
         ds_found_and_accessible = True
     else:
         emsg += f"Could not find dataset in CSW catalog: {nc_file} (id: {ds_id})"
@@ -183,10 +189,10 @@ def move_data(mmd_repository_path, old_file_location_base, new_file_location_bas
 
         # Update with dmci update
         dmci_updated = False
-        if res.status_code == 200 and not dry_run:
+        if res.status_code == 200 and "OK" in res.text and not dry_run:
             # be careful with this...
             res = requests.post(url=f"https://{urls[env]['dmci']}/v1/update", data=data)
-        if res.status_code == 200:
+        if res.status_code == 200 and "OK" in res.text:
             # This should be the case for a dry-run and a valid xml
             dmci_updated = True
         else:
@@ -199,7 +205,7 @@ def move_data(mmd_repository_path, old_file_location_base, new_file_location_bas
         elif dmci_updated and dry_run:
             nc_moved = True
 
-        ds_id = f"no.met.{urls[env]['id_namespace']}:{os.path.basename(mmd_orig).split('.')[0]}"
+        ds_id = f"{urls[env]['id_namespace']}:{os.path.basename(mmd_orig).split('.')[0]}"
         if not dry_run:
             ds_found_and_accessible, emsg = check_csw_catalog(ds_id, nc_file, urls, env, emsg=emsg)
         else:
diff --git a/tests/test_mmd_operations.py b/tests/test_mmd_operations.py
index 1ae8a90b..3e1306a1 100644
--- a/tests/test_mmd_operations.py
+++ b/tests/test_mmd_operations.py
@@ -101,6 +101,7 @@ def mock_walk(*a, **k):
 
     class MockResponse:
         status_code = 200
+        text = "OK"
 
     # Test check for environment in move_data function
     with pytest.raises(ValueError):
@@ -295,6 +296,7 @@ class MockResponse:
     class MockResponse2:
 
         status_code = 200
+        text = ""
 
     with monkeypatch.context() as mp:
         mp.setattr("py_mmd_tools.mmd_operations.requests.get",
@@ -304,6 +306,30 @@ class MockResponse2:
         assert msg == ""
 
 
+@pytest.mark.online
+def test_check_dataset_in_met_csw_catalog():
+    """Check that a known dataset is found.
+    """
+    ds_id = "no.met:806070da-e9f3-4d03-ba1d-26b843961634"
+    # Leads to internal server error:
+    # ds_id = "no.met:aaaffc75-a42f-4bd8-a1f5-c8e8774fd948"
+    # url: 
+    # "https://data.csw.met.no/csw?service=CSW&version=2.0.2"
+    # "&request=GetRepositoryItem&id=no.met:aaaffc75-a42f-4bd8-a1f5-c8e8774fd948"
+    nc_file = "ncfile.nc"
+    urls = {"prod": {"dmci": "dmci.s-enda.k8s.met.no",
+                     "csw": "data.csw.met.no",
+                     "id_namespace": "no.met"}}
+    env = "prod"
+    found, msg = check_csw_catalog(ds_id, nc_file, urls, env)
+    assert found is True
+    assert msg == ""
+
+    ds_id = "rubbish"
+    found, msg = check_csw_catalog(ds_id, nc_file, urls, env)
+    assert found is False
+
+
 @pytest.mark.py_mmd_tools
 def test_move_data_file(monkeypatch):
     """Test move_data_file function can't move (working move is
diff --git a/tests/test_move_data_script.py b/tests/test_move_data_script.py
index 7003d71c..c5f1cabd 100644
--- a/tests/test_move_data_script.py
+++ b/tests/test_move_data_script.py
@@ -32,6 +32,7 @@ def test_main(dataDir, monkeypatch):
     class MockResponse:
 
         status_code = 200
+        text = "OK"
 
     with monkeypatch.context() as mp:
         mp.setattr("py_mmd_tools.mmd_operations.os.path.isdir",