diff --git a/test/functional/tests/cli/test_cli_standby.py b/test/functional/tests/cli/test_cli_standby.py
new file mode 100644
index 0000000..2f61f98
--- /dev/null
+++ b/test/functional/tests/cli/test_cli_standby.py
@@ -0,0 +1,81 @@
+#
+# Copyright(c) 2019-2022 Intel Corporation
+# SPDX-License-Identifier: BSD-3-Clause
+#
+
+import pytest
+
+from api.cas import casadm
+from api.cas.cli import casadm_bin
+from core.test_run import TestRun
+from storage_devices.disk import DiskType, DiskTypeSet, DiskTypeLowerThan
+from test_utils.size import Size, Unit
+from api.cas.cli_messages import check_stderr_msg, missing_param, disallowed_param
+
+
+@pytest.mark.require_disk("cache", DiskTypeSet([DiskType.nand, DiskType.optane]))
+def test_standby_neg_cli_params():
+    """
+    title: Verifying parameters for starting a standby cache instance
+    description: |
+      Try executing the standby init command with required arguments missing or
+      unallowed arguments present.
+    pass_criteria:
+      - The execution is unsuccessful for all improper argument combinations
+      - A proper error message is displayed for unsuccessful executions
+    """
+    with TestRun.step("Prepare the device for the cache."):
+        cache_device = TestRun.disks["cache"]
+        cache_device.create_partitions([Size(500, Unit.MebiByte)])
+        cache_device = cache_device.partitions[0]
+
+    with TestRun.step("Prepare config for testing standby init without required params"):
+        init_required_params = dict(
+            [("--cache-device", cache_device.path), ("--cache-id", 5), ("--cache-line-size", 32)]
+        )
+        # Prepare full valid `standby init` command
+        valid_cmd = casadm_bin + " --standby --init"
+        for name, value in init_required_params.items():
+            valid_cmd += f" {name} {value}"
+
+    # Try to initialize standby instance with one missing param at the time
+    for name, value in init_required_params.items():
+        with TestRun.step(f'Try to init standby instance without "{name}" param'):
+            tested_param = f"{name} {value}"
+            tested_cmd = valid_cmd.replace(tested_param, "")
+            output = TestRun.executor.run(tested_cmd)
+            if output.exit_code == 0:
+                TestRun.LOGGER.error(
+                    f'"{tested_cmd}" command succeeded despite missing required "{name}" paramter!'
+                )
+            if not check_stderr_msg(output, missing_param) or name not in output.stderr:
+                TestRun.LOGGER.error(
+                    f'Expected error message in format "{missing_param[0]}" with "{name}" '
+                    f'(the missing param). Got "{output.stderr}" instead.'
+                )
+
+    with TestRun.step("Prepare config for testing standby init with disallowed params"):
+        init_disallowed_params = dict(
+            [
+                ("--core-device", "/dev/disk/by-id/core_dev_id"),
+                ("--core-id", 5),
+                ("--cache-mode", 32),
+                ("--file", "/etc/opencas/ioclass-config.csv"),
+                ("--io-class-id", "0"),
+            ]
+        )
+
+    for name, value in init_disallowed_params.items():
+        with TestRun.step(f'Try to init standby instance with disallowed "{name}" param'):
+            tested_param = f"{name} {value}"
+            tested_cmd = f"{valid_cmd} {tested_param}"
+            output = TestRun.executor.run(tested_cmd)
+            if output.exit_code == 0:
+                TestRun.LOGGER.error(
+                    f'"{tested_cmd}" command succeeded despite disallowed "{name}" paramter!'
+                )
+            if not check_stderr_msg(output, disallowed_param):
+                TestRun.LOGGER.error(
+                    f'Expected error message in format "{disallowed_param[0]}" '
+                    f'Got "{output.stderr}" instead.'
+                )