diff --git a/config/mempool/default_config.json b/config/mempool/default_config.json
index 787614c0a0..f3156b1dfc 100644
--- a/config/mempool/default_config.json
+++ b/config/mempool/default_config.json
@@ -195,9 +195,9 @@
     "value": "StateOnly"
   },
   "chain_id": {
-    "description": "The chain to follow.",
-    "privacy": "TemporaryValue",
-    "value": "SN_MAIN"
+    "description": "A required param! The chain to follow.",
+    "param_type": "String",
+    "privacy": "TemporaryValue"
   },
   "compiler_config.max_bytecode_size": {
     "description": "Limitation of contract bytecode size.",
diff --git a/crates/mempool_node/src/config/component_config.rs b/crates/mempool_node/src/config/component_config.rs
index f957d46095..7c7be88a1f 100644
--- a/crates/mempool_node/src/config/component_config.rs
+++ b/crates/mempool_node/src/config/component_config.rs
@@ -42,8 +42,7 @@ impl Default for ComponentConfig {
 
 impl SerializeConfig for ComponentConfig {
     fn dump(&self) -> BTreeMap<ParamPath, SerializedParam> {
-        #[allow(unused_mut)]
-        let mut sub_configs = vec![
+        let sub_configs = vec![
             append_sub_config_name(self.batcher.dump(), "batcher"),
             append_sub_config_name(self.consensus_manager.dump(), "consensus_manager"),
             append_sub_config_name(self.gateway.dump(), "gateway"),
diff --git a/crates/mempool_node/src/config/config_test.rs b/crates/mempool_node/src/config/config_test.rs
index c61f3217e7..33a8948c7e 100644
--- a/crates/mempool_node/src/config/config_test.rs
+++ b/crates/mempool_node/src/config/config_test.rs
@@ -16,7 +16,7 @@ use starknet_sequencer_infra::component_definitions::{
 use validator::Validate;
 
 use crate::config::{
-    node_command,
+    create_test_config_load_args,
     ComponentExecutionConfig,
     ComponentExecutionMode,
     SequencerNodeConfig,
@@ -93,11 +93,8 @@ fn test_default_config_file_is_up_to_date() {
 /// Tests parsing a node config without additional args.
 #[test]
 fn test_config_parsing() {
-    let config_file_name = get_absolute_path(DEFAULT_CONFIG_PATH);
-    let config = SequencerNodeConfig::load_and_process_file(
-        vec![node_command().to_string()],
-        config_file_name.to_str().unwrap(),
-    );
+    let args = create_test_config_load_args(&CONFIG_POINTERS);
+    let config = SequencerNodeConfig::load_and_process(args);
     let config = config.expect("Parsing function failed.");
 
     let result = config_validate(&config);
diff --git a/crates/mempool_node/src/config/node_config.rs b/crates/mempool_node/src/config/node_config.rs
index afc9cfb1be..636618089d 100644
--- a/crates/mempool_node/src/config/node_config.rs
+++ b/crates/mempool_node/src/config/node_config.rs
@@ -4,14 +4,16 @@ use std::path::Path;
 use std::sync::LazyLock;
 
 use clap::Command;
-use papyrus_config::dumping::{append_sub_config_name, ser_pointer_target_param, SerializeConfig};
+use papyrus_config::dumping::{
+    append_sub_config_name,
+    ser_pointer_target_required_param,
+    SerializeConfig,
+};
 use papyrus_config::loading::load_and_process_config;
 use papyrus_config::validators::validate_ascii;
 #[cfg(any(feature = "testing", test))]
-use papyrus_config::SerializationType;
-#[cfg(any(feature = "testing", test))]
 use papyrus_config::SerializedContent;
-use papyrus_config::{ConfigError, ParamPath, SerializedParam};
+use papyrus_config::{ConfigError, ParamPath, SerializationType, SerializedParam};
 use serde::{Deserialize, Serialize};
 use starknet_api::core::ChainId;
 use starknet_batcher::config::BatcherConfig;
@@ -33,9 +35,14 @@ pub const DEFAULT_CONFIG_PATH: &str = "config/mempool/default_config.json";
 // Configuration parameters that share the same value across multiple components.
 type ConfigPointers = Vec<((ParamPath, SerializedParam), Vec<ParamPath>)>;
 pub const DEFAULT_CHAIN_ID: ChainId = ChainId::Mainnet;
+// TODO(Tsabary/AlonH): Discuss testing of required parameters.
 pub static CONFIG_POINTERS: LazyLock<ConfigPointers> = LazyLock::new(|| {
     vec![(
-        ser_pointer_target_param("chain_id", &DEFAULT_CHAIN_ID, "The chain to follow."),
+        ser_pointer_target_required_param(
+            "chain_id",
+            SerializationType::String,
+            "The chain to follow.",
+        ),
         vec![
             "batcher_config.block_builder_config.chain_info.chain_id".to_owned(),
             "batcher_config.storage.db_config.chain_id".to_owned(),
diff --git a/crates/tests-integration/src/integration_test_config_utils.rs b/crates/tests-integration/src/integration_test_config_utils.rs
index 851f7880ff..b393f2cd50 100644
--- a/crates/tests-integration/src/integration_test_config_utils.rs
+++ b/crates/tests-integration/src/integration_test_config_utils.rs
@@ -58,8 +58,11 @@ pub fn dump_config_file_changes(config: SequencerNodeConfig) -> anyhow::Result<(
     dump_json_data(json_data, NODE_CONFIG_CHANGES_FILE_PATH)?;
 
     //  Dump config changes file for the transaction generator.
-    let json_data =
-        config_fields_to_json!(config.http_server_config.ip, config.http_server_config.port,);
+    let json_data = config_fields_to_json!(
+        config.chain_id,
+        config.http_server_config.ip,
+        config.http_server_config.port,
+    );
     dump_json_data(json_data, TX_GEN_CONFIG_CHANGES_FILE_PATH)?;
 
     Ok(())