diff --git a/crates/diesel_models/src/gsm.rs b/crates/diesel_models/src/gsm.rs
new file mode 100644
index 000000000000..d5b3122c7806
--- /dev/null
+++ b/crates/diesel_models/src/gsm.rs
@@ -0,0 +1,97 @@
+//! Gateway status mapping
+
+use common_utils::custom_serde;
+use diesel::{AsChangeset, Identifiable, Insertable, Queryable};
+use time::PrimitiveDateTime;
+
+use crate::schema::gateway_status_map;
+
+#[derive(
+    Clone,
+    Debug,
+    Eq,
+    PartialEq,
+    router_derive::DebugAsDisplay,
+    Identifiable,
+    Queryable,
+    serde::Serialize,
+)]
+#[diesel(table_name = gateway_status_map, primary_key(connector, flow, sub_flow, code, message))]
+pub struct GatewayStatusMap {
+    pub connector: String,
+    pub flow: String,
+    pub sub_flow: String,
+    pub code: String,
+    pub message: String,
+    pub status: String,
+    pub router_error: Option<String>,
+    pub decision: String,
+    #[serde(with = "custom_serde::iso8601")]
+    pub created_at: PrimitiveDateTime,
+    #[serde(with = "custom_serde::iso8601")]
+    pub last_modified: PrimitiveDateTime,
+    pub step_up_possible: bool,
+}
+
+#[derive(Clone, Debug, Eq, PartialEq, Insertable)]
+#[diesel(table_name = gateway_status_map)]
+pub struct GatewayStatusMappingNew {
+    pub connector: String,
+    pub flow: String,
+    pub sub_flow: String,
+    pub code: String,
+    pub message: String,
+    pub status: String,
+    pub router_error: Option<String>,
+    pub decision: String,
+    pub step_up_possible: bool,
+}
+
+#[derive(
+    Clone,
+    Debug,
+    PartialEq,
+    Eq,
+    AsChangeset,
+    router_derive::DebugAsDisplay,
+    Default,
+    serde::Deserialize,
+)]
+#[diesel(table_name = gateway_status_map)]
+pub struct GatewayStatusMapperUpdateInternal {
+    pub connector: Option<String>,
+    pub flow: Option<String>,
+    pub sub_flow: Option<String>,
+    pub code: Option<String>,
+    pub message: Option<String>,
+    pub status: Option<String>,
+    pub router_error: Option<Option<String>>,
+    pub decision: Option<String>,
+    pub step_up_possible: Option<bool>,
+}
+
+#[derive(Debug)]
+pub struct GatewayStatusMappingUpdate {
+    pub status: Option<String>,
+    pub router_error: Option<Option<String>>,
+    pub decision: Option<String>,
+    pub step_up_possible: Option<bool>,
+}
+
+impl From<GatewayStatusMappingUpdate> for GatewayStatusMapperUpdateInternal {
+    fn from(value: GatewayStatusMappingUpdate) -> Self {
+        let GatewayStatusMappingUpdate {
+            decision,
+            status,
+            router_error,
+            step_up_possible,
+        } = value;
+        Self {
+            status,
+            router_error,
+            decision,
+            step_up_possible,
+            ..Default::default()
+        }
+    }
+}
diff --git a/crates/diesel_models/src/lib.rs b/crates/diesel_models/src/lib.rs
index 2d459499a1bd..08d74fb8fd37 100644
--- a/crates/diesel_models/src/lib.rs
+++ b/crates/diesel_models/src/lib.rs
@@ -15,6 +15,7 @@ pub mod events;
 pub mod file;
 #[allow(unused)]
 pub mod fraud_check;
+pub mod gsm;
 #[cfg(feature = "kv_store")]
 pub mod kv;
 pub mod locker_mock_up;
diff --git a/crates/diesel_models/src/query.rs b/crates/diesel_models/src/query.rs
index aeb09b969f13..ac3eeba44359 100644
--- a/crates/diesel_models/src/query.rs
+++ b/crates/diesel_models/src/query.rs
@@ -11,6 +11,7 @@ pub mod events;
 pub mod file;
 pub mod fraud_check;
 pub mod generics;
+pub mod gsm;
 pub mod locker_mock_up;
 pub mod mandate;
 pub mod merchant_account;
diff --git a/crates/diesel_models/src/query/gsm.rs b/crates/diesel_models/src/query/gsm.rs
new file mode 100644
index 000000000000..bd44ce4dc378
--- /dev/null
+++ b/crates/diesel_models/src/query/gsm.rs
@@ -0,0 +1,100 @@
+use diesel::{associations::HasTable, BoolExpressionMethods, ExpressionMethods};
+use error_stack::report;
+
+use crate::{
+    errors, gsm::*, query::generics, schema::gateway_status_map::dsl, PgPooledConn, StorageResult,
+};
+
+impl GatewayStatusMappingNew {
+    pub async fn insert(self, conn: &PgPooledConn) -> StorageResult<GatewayStatusMap> {
+        generics::generic_insert(conn, self).await
+    }
+}
+
+impl GatewayStatusMap {
+    pub async fn find(
+        conn: &PgPooledConn,
+        connector: String,
+        flow: String,
+        sub_flow: String,
+        code: String,
+        message: String,
+    ) -> StorageResult<Self> {
+        generics::generic_find_one::<<Self as HasTable>::Table, _, _>(
+            conn,
+            dsl::connector
+                .eq(connector)
+                .and(dsl::flow.eq(flow))
+                .and(dsl::sub_flow.eq(sub_flow))
+                .and(dsl::code.eq(code))
+                .and(dsl::message.eq(message)),
+        )
+        .await
+    }
+
+    pub async fn retrieve_decision(
+        conn: &PgPooledConn,
+        connector: String,
+        flow: String,
+        sub_flow: String,
+        code: String,
+        message: String,
+    ) -> StorageResult<String> {
+        Self::find(conn, connector, flow, sub_flow, code, message)
+            .await
+            .map(|item| item.decision)
+    }
+
+    pub async fn update(
+        conn: &PgPooledConn,
+        connector: String,
+        flow: String,
+        sub_flow: String,
+        code: String,
+        message: String,
+        gsm: GatewayStatusMappingUpdate,
+    ) -> StorageResult<Self> {
+        generics::generic_update_with_results::<
+            <Self as HasTable>::Table,
+            GatewayStatusMapperUpdateInternal,
+            _,
+            _,
+        >(
+            conn,
+            dsl::connector
+                .eq(connector)
+                .and(dsl::flow.eq(flow))
+                .and(dsl::sub_flow.eq(sub_flow))
+                .and(dsl::code.eq(code))
+                .and(dsl::message.eq(message)),
+            gsm.into(),
+        )
+        .await?
+        .first()
+        .cloned()
+        .ok_or_else(|| {
+            report!(errors::DatabaseError::NotFound)
+                .attach_printable("Error while updating gsm entry")
+        })
+    }
+
+    pub async fn delete(
+        conn: &PgPooledConn,
+        connector: String,
+        flow: String,
+        sub_flow: String,
+        code: String,
+        message: String,
+    ) -> StorageResult<bool> {
+        generics::generic_delete::<<Self as HasTable>::Table, _>(
+            conn,
+            dsl::connector
+                .eq(connector)
+                .and(dsl::flow.eq(flow))
+                .and(dsl::sub_flow.eq(sub_flow))
+                .and(dsl::code.eq(code))
+                .and(dsl::message.eq(message)),
+        )
+        .await
+    }
+}
diff --git a/crates/diesel_models/src/schema.rs b/crates/diesel_models/src/schema.rs
index 2923c719c8f7..50531e432adc 100644
--- a/crates/diesel_models/src/schema.rs
+++ b/crates/diesel_models/src/schema.rs
@@ -332,6 +332,33 @@ diesel::table! {
     }
 }
 
+diesel::table! {
+    use diesel::sql_types::*;
+    use crate::enums::diesel_exports::*;
+
+    gateway_status_map (connector, flow, sub_flow, code, message) {
+        #[max_length = 64]
+        connector -> Varchar,
+        #[max_length = 64]
+        flow -> Varchar,
+        #[max_length = 64]
+        sub_flow -> Varchar,
+        #[max_length = 255]
+        code -> Varchar,
+        #[max_length = 1024]
+        message -> Varchar,
+        #[max_length = 64]
+        status -> Varchar,
+        #[max_length = 64]
+        router_error -> Nullable<Varchar>,
+        #[max_length = 64]
+        decision -> Varchar,
+        created_at -> Timestamp,
+        last_modified -> Timestamp,
+        step_up_possible -> Bool,
+    }
+}
+
 diesel::table! {
     use diesel::sql_types::*;
     use crate::enums::diesel_exports::*;
@@ -909,6 +936,7 @@ diesel::allow_tables_to_appear_in_same_query!(
     events,
     file_metadata,
     fraud_check,
+    gateway_status_map,
     locker_mock_up,
     mandate,
     merchant_account,
diff --git a/crates/router/src/db.rs b/crates/router/src/db.rs
index b62ffd2c530f..3efef2c40f29 100644
--- a/crates/router/src/db.rs
+++ b/crates/router/src/db.rs
@@ -12,6 +12,7 @@ pub mod ephemeral_key;
 pub mod events;
 pub mod file;
 pub mod fraud_check;
+pub mod gsm;
 pub mod locker_mock_up;
 pub mod mandate;
 pub mod merchant_account;
@@ -80,6 +81,7 @@ pub trait StorageInterface:
     + business_profile::BusinessProfileInterface
     + organization::OrganizationInterface
     + routing_algorithm::RoutingAlgorithmInterface
+    + gsm::GsmInterface
     + 'static
 {
     fn get_scheduler_db(&self) -> Box<dyn scheduler::SchedulerInterface>;
diff --git a/crates/router/src/db/gsm.rs b/crates/router/src/db/gsm.rs
new file mode 100644
index 000000000000..b623bdc2bcf5
--- /dev/null
+++ b/crates/router/src/db/gsm.rs
@@ -0,0 +1,180 @@
+use diesel_models::gsm as storage;
+use error_stack::IntoReport;
+
+use super::MockDb;
+use crate::{
+    connection,
+    core::errors::{self, CustomResult},
+    services::Store,
+};
+
+#[async_trait::async_trait]
+pub trait GsmInterface {
+    async fn add_gsm_rule(
+        &self,
+        rule: storage::GatewayStatusMappingNew,
+    ) -> CustomResult<storage::GatewayStatusMap, errors::StorageError>;
+    async fn find_gsm_decision(
+        &self,
+        connector: String,
+        flow: String,
+        sub_flow: String,
+        code: String,
+        message: String,
+    ) -> CustomResult<String, errors::StorageError>;
+    async fn find_gsm_rule(
+        &self,
+        connector: String,
+        flow: String,
+        sub_flow: String,
+        code: String,
+        message: String,
+    ) -> CustomResult<storage::GatewayStatusMap, errors::StorageError>;
+    async fn update_gsm_rule(
+        &self,
+        connector: String,
+        flow: String,
+        sub_flow: String,
+        code: String,
+        message: String,
+        data: storage::GatewayStatusMappingUpdate,
+    ) -> CustomResult<storage::GatewayStatusMap, errors::StorageError>;
+
+    async fn delete_gsm_rule(
+        &self,
+        connector: String,
+        flow: String,
+        sub_flow: String,
+        code: String,
+        message: String,
+    ) -> CustomResult<bool, errors::StorageError>;
+}
+
+#[async_trait::async_trait]
+impl GsmInterface for Store {
+    async fn add_gsm_rule(
+        &self,
+        rule: storage::GatewayStatusMappingNew,
+    ) -> CustomResult<storage::GatewayStatusMap, errors::StorageError> {
+        let conn = connection::pg_connection_write(self).await?;
+        rule.insert(&conn).await.map_err(Into::into).into_report()
+    }
+
+    async fn find_gsm_decision(
+        &self,
+        connector: String,
+        flow: String,
+        sub_flow: String,
+        code: String,
+        message: String,
+    ) -> CustomResult<String, errors::StorageError> {
+        let conn = connection::pg_connection_read(self).await?;
+        storage::GatewayStatusMap::retrieve_decision(
+            &conn, connector, flow, sub_flow, code, message,
+        )
+        .await
+        .map_err(Into::into)
+        .into_report()
+    }
+
+    async fn find_gsm_rule(
+        &self,
+        connector: String,
+        flow: String,
+        sub_flow: String,
+        code: String,
+        message: String,
+    ) -> CustomResult<storage::GatewayStatusMap, errors::StorageError> {
+        let conn = connection::pg_connection_read(self).await?;
+        storage::GatewayStatusMap::find(&conn, connector, flow, sub_flow, code, message)
+            .await
+            .map_err(Into::into)
+            .into_report()
+    }
+
+    async fn update_gsm_rule(
+        &self,
+        connector: String,
+        flow: String,
+        sub_flow: String,
+        code: String,
+        message: String,
+        data: storage::GatewayStatusMappingUpdate,
+    ) -> CustomResult<storage::GatewayStatusMap, errors::StorageError> {
+        let conn = connection::pg_connection_write(self).await?;
+        storage::GatewayStatusMap::update(&conn, connector, flow, sub_flow, code, message, data)
+            .await
+            .map_err(Into::into)
+            .into_report()
+    }
+
+    async fn delete_gsm_rule(
+        &self,
+        connector: String,
+        flow: String,
+        sub_flow: String,
+        code: String,
+        message: String,
+    ) -> CustomResult<bool, errors::StorageError> {
+        let conn = connection::pg_connection_write(self).await?;
+        storage::GatewayStatusMap::delete(&conn, connector, flow, sub_flow, code, message)
+            .await
+            .map_err(Into::into)
+            .into_report()
+    }
+}
+
+#[async_trait::async_trait]
+impl GsmInterface for MockDb {
+    async fn add_gsm_rule(
+        &self,
+        _rule: storage::GatewayStatusMappingNew,
+    ) -> CustomResult<storage::GatewayStatusMap, errors::StorageError> {
+        Err(errors::StorageError::MockDbError)?
+    }
+
+    async fn find_gsm_decision(
+        &self,
+        _connector: String,
+        _flow: String,
+        _sub_flow: String,
+        _code: String,
+        _message: String,
+    ) -> CustomResult<String, errors::StorageError> {
+        Err(errors::StorageError::MockDbError)?
+    }
+
+    async fn find_gsm_rule(
+        &self,
+        _connector: String,
+        _flow: String,
+        _sub_flow: String,
+        _code: String,
+        _message: String,
+    ) -> CustomResult<storage::GatewayStatusMap, errors::StorageError> {
+        Err(errors::StorageError::MockDbError)?
+    }
+
+    async fn update_gsm_rule(
+        &self,
+        _connector: String,
+        _flow: String,
+        _sub_flow: String,
+        _code: String,
+        _message: String,
+        _data: storage::GatewayStatusMappingUpdate,
+    ) -> CustomResult<storage::GatewayStatusMap, errors::StorageError> {
+        Err(errors::StorageError::MockDbError)?
+    }
+
+    async fn delete_gsm_rule(
+        &self,
+        _connector: String,
+        _flow: String,
+        _sub_flow: String,
+        _code: String,
+        _message: String,
+    ) -> CustomResult<bool, errors::StorageError> {
+        Err(errors::StorageError::MockDbError)?
+    }
+}
diff --git a/crates/router/src/types/storage.rs b/crates/router/src/types/storage.rs
index 00a5e07a30e8..1e7c34a420b1 100644
--- a/crates/router/src/types/storage.rs
+++ b/crates/router/src/types/storage.rs
@@ -11,6 +11,7 @@ pub mod enums;
 pub mod ephemeral_key;
 pub mod events;
 pub mod file;
+pub mod gsm;
 #[cfg(feature = "kv_store")]
 pub mod kv;
 pub mod locker_mock_up;
@@ -41,10 +42,10 @@ pub use data_models::payments::{
 
 pub use self::{
     address::*, api_keys::*, capture::*, cards_info::*, configs::*, connector_response::*,
-    customers::*, dispute::*, ephemeral_key::*, events::*, file::*, locker_mock_up::*, mandate::*,
-    merchant_account::*, merchant_connector_account::*, merchant_key_store::*, payment_link::*,
-    payment_method::*, payout_attempt::*, payouts::*, process_tracker::*, refund::*,
-    reverse_lookup::*, routing_algorithm::*,
+    customers::*, dispute::*, ephemeral_key::*, events::*, file::*, gsm::*, locker_mock_up::*,
+    mandate::*, merchant_account::*, merchant_connector_account::*, merchant_key_store::*,
+    payment_link::*, payment_method::*, payout_attempt::*, payouts::*, process_tracker::*,
+    refund::*, reverse_lookup::*, routing_algorithm::*,
 };
 use crate::types::api::routing;
 
diff --git a/crates/router/src/types/storage/gsm.rs b/crates/router/src/types/storage/gsm.rs
new file mode 100644
index 000000000000..bcea00e90910
--- /dev/null
+++ b/crates/router/src/types/storage/gsm.rs
@@ -0,0 +1,4 @@
+pub use diesel_models::gsm::{
+    GatewayStatusMap, GatewayStatusMapperUpdateInternal, GatewayStatusMappingNew,
+    GatewayStatusMappingUpdate,
+};
diff --git a/migrations/2023-11-07-110139_add_gsm_table/down.sql b/migrations/2023-11-07-110139_add_gsm_table/down.sql
new file mode 100644
index 000000000000..e1cdd5d4133d
--- /dev/null
+++ b/migrations/2023-11-07-110139_add_gsm_table/down.sql
@@ -0,0 +1,2 @@
+-- Tables
+DROP TABLE gateway_status_map;
diff --git a/migrations/2023-11-07-110139_add_gsm_table/up.sql b/migrations/2023-11-07-110139_add_gsm_table/up.sql
new file mode 100644
index 000000000000..9dfa68b01af9
--- /dev/null
+++ b/migrations/2023-11-07-110139_add_gsm_table/up.sql
@@ -0,0 +1,16 @@
+-- Your SQL goes here
+-- Tables
+CREATE TABLE IF NOT EXISTS gateway_status_map (
+    connector VARCHAR(64) NOT NULL,
+    flow VARCHAR(64) NOT NULL,
+    sub_flow VARCHAR(64) NOT NULL,
+    code VARCHAR(255) NOT NULL,
+    message VARCHAR(1024),
+    status VARCHAR(64) NOT NULL,
+    router_error VARCHAR(64),
+    decision VARCHAR(64) NOT NULL,
+    created_at TIMESTAMP NOT NULL DEFAULT now()::TIMESTAMP,
+    last_modified TIMESTAMP NOT NULL DEFAULT now()::TIMESTAMP,
+    step_up_possible BOOLEAN NOT NULL DEFAULT FALSE,
+    PRIMARY KEY (connector, flow, sub_flow, code, message)
+);