diff --git a/src/jobflow_remote/remote/data.py b/src/jobflow_remote/remote/data.py
index 15b80059..f8be4fa6 100644
--- a/src/jobflow_remote/remote/data.py
+++ b/src/jobflow_remote/remote/data.py
@@ -4,16 +4,34 @@
 import logging
 import os
 from pathlib import Path
-from typing import Any
+from typing import Any, Callable
 
 import orjson
+from jobflow.core.job import Job, JobConfig
 from jobflow.core.store import JobStore
 from maggma.stores.mongolike import JSONStore
 from monty.json import jsanitize
+from pydantic import BaseModel
 
 from jobflow_remote.utils.data import uuid_to_path
 
 
+class JobWrapper(Job):
+
+    function: Callable
+    function_args: tuple[Any, ...]
+    function_kwargs: dict[str, Any]
+    output_schema: type[BaseModel]
+    uuid: str
+    index: int
+    name: str
+    metadata: dict[str, Any]
+    config: JobConfig
+    hosts: list[str]
+    metadata_updates: list[dict[str, Any]]
+    config_updates: list[dict[str, Any]]
+
+
 def get_job_path(
     job_id: str, index: int | None, base_path: str | Path | None = None
 ) -> str:
@@ -165,4 +183,15 @@ def resolve_job_dict_args(job_dict: dict, store: JobStore) -> dict:
     # substitution is in place
     job_dict["function_args"] = resolved_args
     job_dict["function_kwargs"] = resolved_kwargs
+
+    expected_fields = set(JobWrapper.__annotations__)
+    additional_store_names = set(job_dict.keys()) - expected_fields
+    for additional_store in additional_store_names:
+        if additional_store.startswith("@"):
+            continue
+        if additional_store not in store.additional_stores:
+            raise ValueError(
+                f"Additional store {additional_store!r} is not configured."
+            )
+
     return job_dict
diff --git a/tests/integration/test_slurm.py b/tests/integration/test_slurm.py
index 5150fc79..4d373ba2 100644
--- a/tests/integration/test_slurm.py
+++ b/tests/integration/test_slurm.py
@@ -279,7 +279,7 @@ def test_undefined_additional_stores(worker, job_controller):
 
     from jobflow_remote import submit_flow
     from jobflow_remote.jobs.runner import Runner
-    from jobflow_remote.jobs.state import FlowState, JobState
+    from jobflow_remote.jobs.state import JobState
     from jobflow_remote.testing import add_big_undefined_store
 
     job = add_big_undefined_store(100, 100)
@@ -293,5 +293,4 @@ def test_undefined_additional_stores(worker, job_controller):
     runner.run(ticks=10)
 
     # The job should fail, as the additional store is not defined
-    assert job_controller.count_jobs(state=JobState.FAILED) == 1
-    assert job_controller.count_flows(state=FlowState.FAILED) == 1
+    assert job_controller.count_jobs(state=JobState.REMOTE_ERROR) == 1