diff --git a/src/identity/application/port/output/db/errors.rs b/src/identity/application/port/output/db/errors.rs
index 93df497..4b4eeb7 100644
--- a/src/identity/application/port/output/db/errors.rs
+++ b/src/identity/application/port/output/db/errors.rs
@@ -18,4 +18,7 @@ pub enum OutDBPortError {
     PhoneNumberNotFound,
     EmpLoginOTPNotFound,
     EmpVerificationOTPNotFound,
+    DuplicateStoreName,
+    DuplicateStoreID,
+    StoreIDNotFound,
 }
diff --git a/src/identity/application/port/output/db/mod.rs b/src/identity/application/port/output/db/mod.rs
index b6f884d..ad3bc00 100644
--- a/src/identity/application/port/output/db/mod.rs
+++ b/src/identity/application/port/output/db/mod.rs
@@ -19,6 +19,7 @@ pub mod get_verification_secret;
 pub mod invite_id_exists;
 pub mod phone_exists;
 pub mod store_id_exists;
+pub mod store_name_exists;
 pub mod user_id_exists;
 //pub mod verification_otp_exists;
 pub mod verification_secret_exists;
diff --git a/src/identity/application/port/output/db/store_name_exists.rs b/src/identity/application/port/output/db/store_name_exists.rs
new file mode 100644
index 0000000..bf0d9d9
--- /dev/null
+++ b/src/identity/application/port/output/db/store_name_exists.rs
@@ -0,0 +1,54 @@
+// SPDX-FileCopyrightText: 2024 Aravinth Manivannan <realaravinth@batsense.net>
+//
+// SPDX-License-Identifier: AGPL-3.0-or-later
+
+use mockall::predicate::*;
+use mockall::*;
+
+use crate::identity::domain::store_aggregate::Store;
+
+use super::errors::*;
+#[cfg(test)]
+#[allow(unused_imports)]
+pub use tests::*;
+
+#[automock]
+#[async_trait::async_trait]
+pub trait StoreNameExistsDBPort: Send + Sync {
+    async fn store_name_exists(&self, s: &Store) -> OutDBPortResult<bool>;
+}
+
+pub type StoreNameExistsDBPortObj = std::sync::Arc<dyn StoreNameExistsDBPort>;
+
+#[cfg(test)]
+pub mod tests {
+    use super::*;
+
+    use std::sync::Arc;
+
+    pub fn mock_store_name_exists_db_port_false(times: Option<usize>) -> StoreNameExistsDBPortObj {
+        let mut m = MockStoreNameExistsDBPort::new();
+        if let Some(times) = times {
+            m.expect_store_name_exists()
+                .times(times)
+                .returning(|_| Ok(false));
+        } else {
+            m.expect_store_name_exists().returning(|_| Ok(false));
+        }
+
+        Arc::new(m)
+    }
+
+    pub fn mock_store_name_exists_db_port_true(times: Option<usize>) -> StoreNameExistsDBPortObj {
+        let mut m = MockStoreNameExistsDBPort::new();
+        if let Some(times) = times {
+            m.expect_store_name_exists()
+                .times(times)
+                .returning(|_| Ok(true));
+        } else {
+            m.expect_store_name_exists().returning(|_| Ok(true));
+        }
+
+        Arc::new(m)
+    }
+}