diff --git a/integration_tests/tests/wallet_ffi.rs b/integration_tests/tests/wallet_ffi.rs
index 5a7f1787..00c68085 100644
--- a/integration_tests/tests/wallet_ffi.rs
+++ b/integration_tests/tests/wallet_ffi.rs
@@ -26,7 +26,7 @@ use nssa_core::program::DEFAULT_PROGRAM_ID;
 use tempfile::tempdir;
 use wallet_ffi::{
     FfiAccount, FfiAccountList, FfiBytes32, FfiPrivateAccountKeys, FfiPublicAccountKey,
-    FfiTransferResult, WalletHandle, error,
+    FfiTransferResult, FfiU128, WalletHandle, error,
 };
 
 unsafe extern "C" {
@@ -116,6 +116,7 @@ unsafe extern "C" {
         handle: *mut WalletHandle,
         from: *const FfiBytes32,
         to_keys: *const FfiPrivateAccountKeys,
+        to_identifier: *const FfiU128,
         amount: *const [u8; 16],
         out_result: *mut FfiTransferResult,
     ) -> error::WalletFfiError;
@@ -132,6 +133,7 @@ unsafe extern "C" {
         handle: *mut WalletHandle,
         from: *const FfiBytes32,
         to_keys: *const FfiPrivateAccountKeys,
+        to_identifier: *const FfiU128,
         amount: *const [u8; 16],
         out_result: *mut FfiTransferResult,
     ) -> error::WalletFfiError;
@@ -846,10 +848,12 @@ fn test_wallet_ffi_transfer_shielded() -> Result<()> {
 
     let mut transfer_result = FfiTransferResult::default();
     unsafe {
+        let to_identifier = FfiU128 { data: 0_u128.to_le_bytes() };
         wallet_ffi_transfer_shielded(
             wallet_ffi_handle,
             &raw const from,
             &raw const to_keys,
+            &raw const to_identifier,
             &raw const amount,
             &raw mut transfer_result,
         );
@@ -981,10 +985,12 @@ fn test_wallet_ffi_transfer_private() -> Result<()> {
 
     let mut transfer_result = FfiTransferResult::default();
     unsafe {
+        let to_identifier = FfiU128 { data: 0_u128.to_le_bytes() };
         wallet_ffi_transfer_private(
             wallet_ffi_handle,
             &raw const from,
             &raw const to_keys,
+            &raw const to_identifier,
             &raw const amount,
             &raw mut transfer_result,
         );
diff --git a/wallet-ffi/src/transfer.rs b/wallet-ffi/src/transfer.rs
index 1f251aa2..af72777b 100644
--- a/wallet-ffi/src/transfer.rs
+++ b/wallet-ffi/src/transfer.rs
@@ -9,7 +9,7 @@ use crate::{
     block_on,
     error::{print_error, WalletFfiError},
     map_execution_error,
-    types::{FfiBytes32, FfiTransferResult, WalletHandle},
+    types::{FfiBytes32, FfiTransferResult, FfiU128, WalletHandle},
     wallet::get_wallet,
     FfiPrivateAccountKeys,
 };
@@ -102,6 +102,7 @@ pub unsafe extern "C" fn wallet_ffi_transfer_public(
 /// - `handle`: Valid wallet handle
 /// - `from`: Source account ID (must be owned by this wallet)
 /// - `to_keys`: Destination account keys
+/// - `to_identifier`: Identifier for the recipient's private account
 /// - `amount`: Amount to transfer as little-endian [u8; 16]
 /// - `out_result`: Output pointer for transfer result
 ///
@@ -125,6 +126,7 @@ pub unsafe extern "C" fn wallet_ffi_transfer_shielded(
     handle: *mut WalletHandle,
     from: *const FfiBytes32,
     to_keys: *const FfiPrivateAccountKeys,
+    to_identifier: *const FfiU128,
     amount: *const [u8; 16],
     out_result: *mut FfiTransferResult,
 ) -> WalletFfiError {
@@ -133,7 +135,7 @@ pub unsafe extern "C" fn wallet_ffi_transfer_shielded(
         Err(e) => return e,
     };
 
-    if from.is_null() || to_keys.is_null() || amount.is_null() || out_result.is_null() {
+    if from.is_null() || to_keys.is_null() || to_identifier.is_null() || amount.is_null() || out_result.is_null() {
         print_error("Null pointer argument");
         return WalletFfiError::NullPointer;
     }
@@ -155,12 +157,13 @@ pub unsafe extern "C" fn wallet_ffi_transfer_shielded(
             return e;
         }
     };
+    let to_identifier = u128::from_le_bytes(unsafe { (*to_identifier).data });
     let amount = u128::from_le_bytes(unsafe { *amount });
 
     let transfer = NativeTokenTransfer(&wallet);
 
     match block_on(
-        transfer.send_shielded_transfer_to_outer_account(from_id, to_npk, to_vpk, 0, amount),
+        transfer.send_shielded_transfer_to_outer_account(from_id, to_npk, to_vpk, to_identifier, amount),
     ) {
         Ok((tx_hash, _shared_key)) => {
             let tx_hash = CString::new(tx_hash.to_string())
@@ -271,6 +274,7 @@ pub unsafe extern "C" fn wallet_ffi_transfer_deshielded(
 /// - `handle`: Valid wallet handle
 /// - `from`: Source account ID (must be owned by this wallet)
 /// - `to_keys`: Destination account keys
+/// - `to_identifier`: Identifier for the recipient's private account
 /// - `amount`: Amount to transfer as little-endian [u8; 16]
 /// - `out_result`: Output pointer for transfer result
 ///
@@ -294,6 +298,7 @@ pub unsafe extern "C" fn wallet_ffi_transfer_private(
     handle: *mut WalletHandle,
     from: *const FfiBytes32,
     to_keys: *const FfiPrivateAccountKeys,
+    to_identifier: *const FfiU128,
     amount: *const [u8; 16],
     out_result: *mut FfiTransferResult,
 ) -> WalletFfiError {
@@ -302,7 +307,7 @@ pub unsafe extern "C" fn wallet_ffi_transfer_private(
         Err(e) => return e,
     };
 
-    if from.is_null() || to_keys.is_null() || amount.is_null() || out_result.is_null() {
+    if from.is_null() || to_keys.is_null() || to_identifier.is_null() || amount.is_null() || out_result.is_null() {
         print_error("Null pointer argument");
         return WalletFfiError::NullPointer;
     }
@@ -324,11 +329,12 @@ pub unsafe extern "C" fn wallet_ffi_transfer_private(
             return e;
         }
     };
+    let to_identifier = u128::from_le_bytes(unsafe { (*to_identifier).data });
     let amount = u128::from_le_bytes(unsafe { *amount });
 
     let transfer = NativeTokenTransfer(&wallet);
 
-    match block_on(transfer.send_private_transfer_to_outer_account(from_id, to_npk, to_vpk, 0, amount))
+    match block_on(transfer.send_private_transfer_to_outer_account(from_id, to_npk, to_vpk, to_identifier, amount))
     {
         Ok((tx_hash, _shared_key)) => {
             let tx_hash = CString::new(tx_hash.to_string())
diff --git a/wallet-ffi/wallet_ffi.h b/wallet-ffi/wallet_ffi.h
index 2665cd40..395216b6 100644
--- a/wallet-ffi/wallet_ffi.h
+++ b/wallet-ffi/wallet_ffi.h
@@ -685,6 +685,7 @@ enum WalletFfiError wallet_ffi_transfer_public(struct WalletHandle *handle,
  * - `handle`: Valid wallet handle
  * - `from`: Source account ID (must be owned by this wallet)
  * - `to_keys`: Destination account keys
+ * - `to_identifier`: Identifier for the recipient's private account
  * - `amount`: Amount to transfer as little-endian [u8; 16]
  * - `out_result`: Output pointer for transfer result
  *
@@ -707,6 +708,7 @@ enum WalletFfiError wallet_ffi_transfer_public(struct WalletHandle *handle,
 enum WalletFfiError wallet_ffi_transfer_shielded(struct WalletHandle *handle,
                                                  const struct FfiBytes32 *from,
                                                  const struct FfiPrivateAccountKeys *to_keys,
+                                                 const struct FfiU128 *to_identifier,
                                                  const uint8_t (*amount)[16],
                                                  struct FfiTransferResult *out_result);
 
@@ -753,6 +755,7 @@ enum WalletFfiError wallet_ffi_transfer_deshielded(struct WalletHandle *handle,
  * - `handle`: Valid wallet handle
  * - `from`: Source account ID (must be owned by this wallet)
  * - `to_keys`: Destination account keys
+ * - `to_identifier`: Identifier for the recipient's private account
  * - `amount`: Amount to transfer as little-endian [u8; 16]
  * - `out_result`: Output pointer for transfer result
  *
@@ -775,6 +778,7 @@ enum WalletFfiError wallet_ffi_transfer_deshielded(struct WalletHandle *handle,
 enum WalletFfiError wallet_ffi_transfer_private(struct WalletHandle *handle,
                                                 const struct FfiBytes32 *from,
                                                 const struct FfiPrivateAccountKeys *to_keys,
+                                                const struct FfiU128 *to_identifier,
                                                 const uint8_t (*amount)[16],
                                                 struct FfiTransferResult *out_result);