diff --git a/.github/workflows/CI.yml b/.github/workflows/CI.yml
index 5ce0e958da..26696fa470 100644
--- a/.github/workflows/CI.yml
+++ b/.github/workflows/CI.yml
@@ -189,7 +189,7 @@ jobs:
 
       - name: Cargo hack router
         if: env.router_changes_exist == 'true'
-        run: cargo hack check --each-feature --skip kms,basilisk,production,kv_store,accounts_cache,openapi --no-dev-deps -p router
+        run: cargo hack check --each-feature --skip kms,basilisk,kv_store,accounts_cache,openapi --no-dev-deps -p router
 
       - name: Cargo hack router_derive
         if: env.router_derive_changes_exist == 'true'
@@ -361,7 +361,7 @@ jobs:
 
       - name: Cargo hack router
         if: env.router_changes_exist == 'true'
-        run: cargo hack check --each-feature --skip kms,basilisk,production,kv_store,accounts_cache,openapi --no-dev-deps -p router
+        run: cargo hack check --each-feature --skip kms,basilisk,kv_store,accounts_cache,openapi --no-dev-deps -p router
 
       - name: Cargo hack router_derive
         if: env.router_derive_changes_exist == 'true'
@@ -374,7 +374,7 @@ jobs:
       - name: Cargo hack storage_models
         if: env.storage_models_changes_exist == 'true'
         run: cargo hack check --each-feature --no-dev-deps -p storage_models
-  
+
   typos:
     name: Spell check
     runs-on: ubuntu-latest
diff --git a/Dockerfile b/Dockerfile
index 2805ee1832..fb92bd3acb 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,6 +1,5 @@
 FROM rust:slim as builder
 
-ARG RUN_ENV=sandbox
 ARG EXTRA_FEATURES=""
 
 RUN apt-get update \
@@ -33,7 +32,7 @@ ENV RUST_BACKTRACE="short"
 ENV CARGO_REGISTRIES_CRATES_IO_PROTOCOL="sparse"
 
 COPY . .
-RUN cargo build --release --features ${RUN_ENV} ${EXTRA_FEATURES}
+RUN cargo build --release --features release ${EXTRA_FEATURES}
 
 
 
diff --git a/crates/router/Cargo.toml b/crates/router/Cargo.toml
index 3f29ca2408..76aa16a1d0 100644
--- a/crates/router/Cargo.toml
+++ b/crates/router/Cargo.toml
@@ -16,8 +16,7 @@ kms = ["external_services/kms","dep:aws-config"]
 email = ["external_services/email","dep:aws-config"]
 basilisk = ["kms"]
 stripe = ["dep:serde_qs"]
-sandbox = ["kms", "stripe", "basilisk", "s3", "email"]
-production = ["kms", "stripe", "basilisk", "s3", "email"]
+release = ["kms", "stripe", "basilisk", "s3", "email"]
 olap = []
 oltp = []
 kv_store = []
diff --git a/crates/router/src/core/payment_methods/transformers.rs b/crates/router/src/core/payment_methods/transformers.rs
index e65ee980c0..69fa59f906 100644
--- a/crates/router/src/core/payment_methods/transformers.rs
+++ b/crates/router/src/core/payment_methods/transformers.rs
@@ -241,11 +241,7 @@ pub async fn mk_add_card_request_hs(
     customer_id: &str,
     merchant_id: &str,
 ) -> CustomResult<services::Request, errors::VaultError> {
-    let merchant_customer_id = if cfg!(feature = "sandbox") {
-        format!("{customer_id}::{merchant_id}")
-    } else {
-        customer_id.to_owned()
-    };
+    let merchant_customer_id = customer_id.to_owned();
     let card = Card {
         card_number: card.card_number.to_owned(),
         name_on_card: card.card_holder_name.to_owned(),
@@ -359,7 +355,7 @@ pub fn mk_add_card_request(
     locker_id: &str,
     merchant_id: &str,
 ) -> CustomResult<services::Request, errors::VaultError> {
-    let customer_id = if cfg!(feature = "sandbox") {
+    let customer_id = if cfg!(feature = "release") {
         format!("{customer_id}::{merchant_id}")
     } else {
         customer_id.to_owned()
@@ -398,11 +394,7 @@ pub async fn mk_get_card_request_hs(
     merchant_id: &str,
     card_reference: &str,
 ) -> CustomResult<services::Request, errors::VaultError> {
-    let merchant_customer_id = if cfg!(feature = "sandbox") {
-        format!("{customer_id}::{merchant_id}")
-    } else {
-        customer_id.to_owned()
-    };
+    let merchant_customer_id = customer_id.to_owned();
     let card_req_body = CardReqBody {
         merchant_id,
         merchant_customer_id,
@@ -482,11 +474,7 @@ pub async fn mk_delete_card_request_hs(
     merchant_id: &str,
     card_reference: &str,
 ) -> CustomResult<services::Request, errors::VaultError> {
-    let merchant_customer_id = if cfg!(feature = "sandbox") {
-        format!("{customer_id}::{merchant_id}")
-    } else {
-        customer_id.to_owned()
-    };
+    let merchant_customer_id = customer_id.to_owned();
     let card_req_body = CardReqBody {
         merchant_id,
         merchant_customer_id,