# Passing configuration

**URL:** <https://discuss.ray.io/t/passing-configuration/11458>\
**Category:** RLlib\
**Created:** [July 18, 2023, 1:40pm UTC](https://discuss.ray.io/t/passing-configuration/11458 "2023-07-18T13:40:31Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![PatrickGoettsch](https://avatars.discourse-cdn.com/v4/letter/p/b77776/32.png) [@PatrickGoettsch](https://discuss.ray.io/u/PatrickGoettsch)\
**Post date:** [July 18, 2023, 1:40pm UTC](https://discuss.ray.io/t/passing-configuration/11458/1 "2023-07-18T13:40:31Z")

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Hello,

when passing a custom tuner configuration to find optimal hyperparameter for an RL problem, I get the following errer:

> WARNING algorithm\_config.py:2534 – Setting `exploration_config={}` because you set `_enable_rl_module_api=True`. When RLModule API are enabled, exploration\_config can not be set. If you want to implement custom exploration behaviour, please modify the `forward_exploration` method of the RLModule at hand. On configs that have a default exploration config, this must be done with `config.exploration_config={}`.

I define a standard configuration like:

```auto
ppo_config = (
        PPOConfig()
        .environment(
            env=ENVIRONMENT,
            env_config={
                "max_episode_steps": MAX_EPISODE_STEPS,
                "sampling_time": SAMPLING_TIME,
                "render_mode": None,
            },
            render_env=False,
        )
        .rollouts(num_rollout_workers=4, num_envs_per_worker=1)
        .framework("torch")
        .exploration(explore=True)
        )
        .training(
            sgd_minibatch_size=tune.grid_search([8, 16, 32, 64, 128, 256, 512]),
       ))

```

and configure the tuner with:

```auto
    tuner = tune.Tuner(
        "PPO",
        param_space=ppo_config,
        tune_config=tune.TuneConfig(
            metric="episode_reward_mean",
            mode="max",
            num_samples=8,
        ),
        run_config=air.RunConfig(
            stop=stop,
            checkpoint_config=air.CheckpointConfig(
                checkpoint_at_end=True,
                checkpoint_frequency=1,
                num_to_keep=25,
                checkpoint_score_attribute="episode_reward_mean",
                checkpoint_score_order="max",
            ),

        ),
    )
    results = tuner.fit()

```

Can someone privde help, how to fix this issue?  
Thanks

---

<div class="post-metadata">

**Author:** ![kourosh](https://sea2.discourse-cdn.com/flex020/user_avatar/discuss.ray.io/kourosh/32/2130_2.png) [@kourosh](https://discuss.ray.io/u/kourosh)\
**Post date:** [July 20, 2023, 3:57pm UTC](https://discuss.ray.io/t/passing-configuration/11458/2 "2023-07-20T15:57:14Z")

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Hi @PatrickGoettsch,

The message seems to be a warning and not an error. Are you sure that is the cause of error?

Cc @arturn

---

<div class="post-metadata">

**Author:** ![arturn](https://sea2.discourse-cdn.com/flex020/user_avatar/discuss.ray.io/arturn/32/2096_2.png) [@arturn](https://discuss.ray.io/u/arturn)\
**Post date:** [July 20, 2023, 9:38pm UTC](https://discuss.ray.io/t/passing-configuration/11458/3 "2023-07-20T21:38:38Z")

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@PatrickGoettsch The WARNING you posted occurs very frequently. This may seem irritating, but it should not cause an error.