diff --git a/docs/HEMS.rst b/docs/HEMS.rst
index aceee1d9..ed24a9af 100644
--- a/docs/HEMS.rst
+++ b/docs/HEMS.rst
@@ -77,3 +77,9 @@ In the third terminal, run the client script using the `/examples/HEMS` folder a
 
     cd examples/HEMS
     python3 HEMS_setup.py
+
+.. note::
+   Report generation (see :ref:`hems-tutorial` note above) shells out to a ``flexmeasures`` CLI process, which by default is expected on ``PATH`` and configured against the same database as the server. If your FlexMeasures server runs elsewhere (e.g. inside a Docker Compose service), point report generation at it instead via two environment variables:
+
+   - ``FLEXMEASURES_CLI_CMD``: the command used to invoke the CLI, e.g. ``"docker compose exec -T server flexmeasures"``.
+   - ``FLEXMEASURES_CLI_CONFIG_DIR``: the directory the CLI process sees the ``examples/HEMS/configs/`` files at, if different from their local path (e.g. because that directory is bind-mounted into a container at a different path).
diff --git a/examples/HEMS/reporters.py b/examples/HEMS/reporters.py
index 36e90c90..958e387e 100644
--- a/examples/HEMS/reporters.py
+++ b/examples/HEMS/reporters.py
@@ -11,7 +11,11 @@
     pv_name,
 )
 from utils.asset_utils import find_sensors_by_asset
-from utils.reporter_utils import fill_reporter_params, run_report_cmd
+from utils.reporter_utils import (
+    cli_command_prefix,
+    fill_reporter_params,
+    run_report_cmd,
+)
 
 from flexmeasures_client import FlexMeasuresClient
 
@@ -22,8 +26,9 @@ async def create_reports(
     """Generate reports using FlexMeasures CLI."""
     print("Generating reports...")
 
-    # Check if flexmeasures CLI is available
-    check_cmd = ["which", "flexmeasures"]
+    # Check if the configured FlexMeasures CLI command is available
+    # (only meaningful to check the first token, e.g. "flexmeasures" or "docker")
+    check_cmd = ["which", cli_command_prefix()[0]]
     check_result = subprocess.run(check_cmd, capture_output=True, text=True)
 
     if check_result.returncode != 0:
diff --git a/examples/HEMS/utils/reporter_utils.py b/examples/HEMS/utils/reporter_utils.py
index 629eeaa0..105a35b8 100644
--- a/examples/HEMS/utils/reporter_utils.py
+++ b/examples/HEMS/utils/reporter_utils.py
@@ -1,11 +1,42 @@
 import json
 import os
+import shlex
 import subprocess
 from pathlib import Path
 
 BASE_DIR = Path(__file__).parent.parent
 
 
+def cli_command_prefix() -> list[str]:
+    """
+    The command used to invoke the FlexMeasures CLI, split into argv tokens.
+
+    Defaults to a plain ``flexmeasures`` on PATH, which requires the CLI to be
+    installed locally and configured to talk to the same database as the
+    server the client is scripting against (see the "Running the Tutorial"
+    instructions in docs/HEMS.rst).
+
+    Override via the ``FLEXMEASURES_CLI_CMD`` environment variable to run the
+    CLI elsewhere, e.g. inside a Docker Compose service:
+
+        FLEXMEASURES_CLI_CMD="docker compose -f /path/to/docker-compose.yml exec -T server flexmeasures"
+    """
+    return shlex.split(os.environ.get("FLEXMEASURES_CLI_CMD", "flexmeasures"))
+
+
+def _cli_config_path(local_path: str) -> str:
+    """
+    Translate a local config/parameter file path to the path the CLI process
+    will see it at, when that process runs somewhere other than this host
+    (e.g. inside a container with the ``configs/`` directory bind-mounted
+    elsewhere). Controlled via ``FLEXMEASURES_CLI_CONFIG_DIR``; a no-op if unset.
+    """
+    remote_dir = os.environ.get("FLEXMEASURES_CLI_CONFIG_DIR")
+    if not remote_dir:
+        return local_path
+    return os.path.join(remote_dir, os.path.basename(local_path))
+
+
 def fill_reporter_params(
     input_sensors: list[dict],
     output_sensors: list[dict] | dict,
@@ -75,16 +106,22 @@ def run_report_cmd(reporter_map: dict, start: str, end: str) -> bool:
         start (str): Start time of the report period (ISO 8601 format).
         end (str): End time of the report period (ISO 8601 format).
     """
+    config_path = os.path.join(
+        BASE_DIR, f"configs/{reporter_map['name']}_reporter_config.json"
+    )
+    param_path = os.path.join(
+        BASE_DIR, f"configs/{reporter_map['name']}_reporter_param.json"
+    )
     cmd = [
-        "flexmeasures",
+        *cli_command_prefix(),
         "add",
         "report",
         "--reporter",
         reporter_map["reporter"],
         "--config",
-        os.path.join(BASE_DIR, f"configs/{reporter_map['name']}_reporter_config.json"),
+        _cli_config_path(config_path),
         "--parameters",
-        os.path.join(BASE_DIR, f"configs/{reporter_map['name']}_reporter_param.json"),
+        _cli_config_path(param_path),
         "--start",
         start,
         "--end",
diff --git a/src/flexmeasures_client/client.py b/src/flexmeasures_client/client.py
index c3a568fb..2757b618 100644
--- a/src/flexmeasures_client/client.py
+++ b/src/flexmeasures_client/client.py
@@ -604,8 +604,10 @@ async def _post_sensor_data_file(
                     allow_redirects=False,
                 )
 
-                # Check response status
-                if response.status != 200:
+                # Check response status (any 2xx is success, e.g. 202 Accepted
+                # for asynchronous processing, matching check_for_status()'s
+                # convention used elsewhere in this client)
+                if not (200 <= response.status < 300):
                     try:
                         error_data = await response.json()
                         error_message = f"Request failed with status code {response.status}: {error_data}"
@@ -619,7 +621,8 @@ async def _post_sensor_data_file(
                 # Parse response
                 response_data = await response.json()
                 self.logger.info(
-                    f"File uploaded successfully: {os.path.basename(file_path)}"
+                    f"File uploaded successfully: {os.path.basename(file_path)} "
+                    f"(status {response.status})"
                 )
                 return response_data, response.status
 
diff --git a/tests/client/test_sensor.py b/tests/client/test_sensor.py
index 2080566b..463e300f 100644
--- a/tests/client/test_sensor.py
+++ b/tests/client/test_sensor.py
@@ -436,6 +436,36 @@ async def test_post_sensor_data_with_file():
         os.unlink(csv_path)
 
 
+@pytest.mark.asyncio
+async def test_post_sensor_data_with_file_accepted():
+    """202 Accepted (asynchronous processing) is treated as success, not an error."""
+    csv_path = "/tmp/test_sensor_data_accepted.csv"
+    with open(csv_path, "w") as f:
+        f.write("datetime,value\n2023-01-01T00:00+00:00,1.0\n")
+
+    try:
+        with aioresponses() as m:
+            client = FlexMeasuresClient(email="test@test.test", password="test")
+            client.access_token = "test-token"
+            m.post(
+                "http://localhost:5000/api/v3_0/sensors/1/data/upload",
+                status=202,
+                payload={
+                    "job_id": "test-job-id",
+                    "message": "Sensor data has been accepted for processing.",
+                    "status": "ACCEPTED",
+                },
+            )
+            response_data, status = await client.post_sensor_data(
+                sensor_id=1,
+                file_path=csv_path,
+            )
+            assert status == 202
+            await client.close()
+    finally:
+        os.unlink(csv_path)
+
+
 @pytest.mark.asyncio
 async def test_post_sensor_data_json_with_prior():
     """prior parameter is included in payload."""