diff --git a/SoftLayer/managers/metadata.py b/SoftLayer/managers/metadata.py
index 405f88da..d6477cc1 100644
--- a/SoftLayer/managers/metadata.py
+++ b/SoftLayer/managers/metadata.py
@@ -82,10 +82,13 @@ def get(self, name, param=None):
                 raise exceptions.SoftLayerError(
                     'Parameter required to get this attribute.')
 
+        params = tuple()
+        if param is not None:
+            params = (param,)
         try:
             return self.client.call('Resource_Metadata',
                                     self.attribs[name]['call'],
-                                    param)
+                                    *params)
         except exceptions.SoftLayerAPIError as ex:
             if ex.faultCode == 404:
                 return None

'slcli metadata tags' command fails
The 'slcli metadata tags' command fails, the following exception is raised when debug is set:

slcli -vvv metadata tags
=== REQUEST ===
https://api.service.softlayer.com/rest/v3.1/SoftLayer_Resource_Metadata/Tags/None.json
{'Content-Type': 'application/json', 'Accept-Encoding': 'gzip, deflate, compress', 'Accept': '*/*', 'User-Agent': 'softlayer-python/v4.0.0'}
Starting new HTTPS connection (1): api.service.softlayer.com
Setting read timeout to 5
"GET /rest/v3.1/SoftLayer_Resource_Metadata/Tags/None.json HTTP/1.1" 404 70
=== RESPONSE ===
CaseInsensitiveDict({'x-client-ip': '192.168.67.116', 'content-length': '70', 'vary': 'Accept-Encoding', 'server': 'Apache', 'x-backside-transport': 'FAIL FAIL', 'connection': 'close', 'date': 'Tue, 14 Apr 2015 21:15:33 GMT', 'content-type': 'application/json'})
{"error":"Service does not exist","code":"SoftLayer_Exception_Public"}

The following commands failed as well
 slcli metadata backend_ip
  slcli metadata backend_mac
  slcli metadata datacenter
  slcli metadata datacenter_id
  slcli metadata fqdn
  slcli metadata frontend_mac
  slcli metadata id
  slcli metadata ip
  slcli metadata network
  slcli metadata provision_state
  slcli metadata tags
  slcli metadata user_data

The problem is reproduced using API SoftLayer python client version 4, using version 3 of the client to run the 'sl metadata tags' command works with no problems
diff --git a/SoftLayer/tests/managers/metadata_tests.py b/SoftLayer/tests/managers/metadata_tests.py
index 9d471265..1ee2b3bd 100644
--- a/SoftLayer/tests/managers/metadata_tests.py
+++ b/SoftLayer/tests/managers/metadata_tests.py
@@ -28,7 +28,8 @@ def test_no_param(self):
 
         self.assertEqual('dal01', resp)
         self.assert_called_with('SoftLayer_Resource_Metadata', 'Datacenter',
-                                identifier=None)
+                                identifier=None,
+                                args=tuple())
 
     def test_w_param(self):
         resp = self.metadata.get('vlans', '1:2:3:4:5')

pip install -e .[dev]
parse_log_pytest
requirements.txt
pytest
apt-get update apt-get install -y gcc
3.6
tools/test-requirements.txt
pytest --no-header -rA --tb=line --color=no -p no:cacheprovider -W ignore::DeprecationWarning
alabaster==0.7.13
attrs==22.2.0
Babel==2.11.0
certifi==2021.5.30
charset-normalizer==2.0.12
click==8.0.4
coverage==6.2
distlib==0.3.9
docutils==0.18.1
filelock==3.4.1
fixtures==4.0.1
idna==3.10
imagesize==1.4.1
importlib-metadata==4.8.3
importlib-resources==5.4.0
iniconfig==1.1.1
Jinja2==3.0.3
MarkupSafe==2.0.1
mock==5.2.0
nose==1.3.7
packaging==21.3
pbr==6.1.1
platformdirs==2.4.0
pluggy==1.0.0
prettytable==2.5.0
py==1.11.0
Pygments==2.14.0
pyparsing==3.1.4
pytest==7.0.1
pytz==2025.2
requests==2.27.1
six==1.17.0
snowballstemmer==2.2.0
-e git+https://github.com/softlayer/softlayer-python.git@200787d4c3bf37bc4e701caf6a52e24dd07d18a3#egg=SoftLayer
Sphinx==5.3.0
sphinxcontrib-applehelp==1.0.2
sphinxcontrib-devhelp==1.0.2
sphinxcontrib-htmlhelp==2.0.0
sphinxcontrib-jsmath==1.0.1
sphinxcontrib-qthelp==1.0.3
sphinxcontrib-serializinghtml==1.1.5
testtools==2.6.0
toml==0.10.2
tomli==1.2.3
tox==3.28.0
typing_extensions==4.1.1
urllib3==1.26.20
virtualenv==20.17.1
wcwidth==0.2.13
zipp==3.6.0

name: softlayer-python
channels:
  - defaults
  - https://repo.anaconda.com/pkgs/main
  - https://repo.anaconda.com/pkgs/r
  - conda-forge
dependencies:
  - _libgcc_mutex=0.1=main
  - _openmp_mutex=5.1=1_gnu
  - ca-certificates=2025.2.25=h06a4308_0
  - certifi=2021.5.30=py36h06a4308_0
  - ld_impl_linux-64=2.40=h12ee557_0
  - libffi=3.3=he6710b0_2
  - libgcc-ng=11.2.0=h1234567_1
  - libgomp=11.2.0=h1234567_1
  - libstdcxx-ng=11.2.0=h1234567_1
  - ncurses=6.4=h6a678d5_0
  - openssl=1.1.1w=h7f8727e_0
  - pip=21.2.2=py36h06a4308_0
  - python=3.6.13=h12debd9_1
  - readline=8.2=h5eee18b_0
  - setuptools=58.0.4=py36h06a4308_0
  - sqlite=3.45.3=h5eee18b_0
  - tk=8.6.14=h39e8969_0
  - wheel=0.37.1=pyhd3eb1b0_0
  - xz=5.6.4=h5eee18b_1
  - zlib=1.2.13=h5eee18b_1
  - pip:
      - alabaster==0.7.13
      - attrs==22.2.0
      - babel==2.11.0
      - charset-normalizer==2.0.12
      - click==8.0.4
      - coverage==6.2
      - distlib==0.3.9
      - docutils==0.18.1
      - filelock==3.4.1
      - fixtures==4.0.1
      - idna==3.10
      - imagesize==1.4.1
      - importlib-metadata==4.8.3
      - importlib-resources==5.4.0
      - iniconfig==1.1.1
      - jinja2==3.0.3
      - markupsafe==2.0.1
      - mock==5.2.0
      - nose==1.3.7
      - packaging==21.3
      - pbr==6.1.1
      - platformdirs==2.4.0
      - pluggy==1.0.0
      - prettytable==2.5.0
      - py==1.11.0
      - pygments==2.14.0
      - pyparsing==3.1.4
      - pytest==7.0.1
      - pytz==2025.2
      - requests==2.27.1
      - six==1.17.0
      - snowballstemmer==2.2.0
      - sphinx==5.3.0
      - sphinxcontrib-applehelp==1.0.2
      - sphinxcontrib-devhelp==1.0.2
      - sphinxcontrib-htmlhelp==2.0.0
      - sphinxcontrib-jsmath==1.0.1
      - sphinxcontrib-qthelp==1.0.3
      - sphinxcontrib-serializinghtml==1.1.5
      - testtools==2.6.0
      - toml==0.10.2
      - tomli==1.2.3
      - tox==3.28.0
      - typing-extensions==4.1.1
      - urllib3==1.26.20
      - virtualenv==20.17.1
      - wcwidth==0.2.13
      - zipp==3.6.0
prefix: /opt/conda/envs/softlayer-python

SoftLayer/tests/managers/metadata_tests.py::MetadataTests::test_no_param
SoftLayer/tests/managers/metadata_tests.py::MetadataTests::test_404 SoftLayer/tests/managers/metadata_tests.py::MetadataTests::test_error SoftLayer/tests/managers/metadata_tests.py::MetadataTests::test_get SoftLayer/tests/managers/metadata_tests.py::MetadataTests::test_networks SoftLayer/tests/managers/metadata_tests.py::MetadataTests::test_not_exists SoftLayer/tests/managers/metadata_tests.py::MetadataTests::test_return_none SoftLayer/tests/managers/metadata_tests.py::MetadataTests::test_user_data SoftLayer/tests/managers/metadata_tests.py::MetadataTests::test_w_param SoftLayer/tests/managers/metadata_tests.py::MetadataTests::test_w_param_error
SoftLayer/managers/metadata.py
SoftLayer/managers/metadata.py