diff --git a/services/wallet/router/router_v2.go b/services/wallet/router/router_v2.go
index 934c8063b..690af2df1 100644
--- a/services/wallet/router/router_v2.go
+++ b/services/wallet/router/router_v2.go
@@ -2,6 +2,7 @@ package router
 
 import (
 	"context"
+	"errors"
 	"fmt"
 	"math"
 	"math/big"
@@ -443,17 +444,17 @@ func validateFromLockedAmount(fromLockedAmount map[uint64]*hexutil.Big, isTestne
 	for chainID, amount := range fromLockedAmount {
 		if isTestnetMode {
 			if !supportedTestNetworks[chainID] {
-				return ErrorLockedAmountNotSupportedNetwork
+				return errors.New("locked amount is not supported for the selected network")
 			}
 		} else {
 			if !supportedNetworks[chainID] {
-				return ErrorLockedAmountNotSupportedNetwork
+				return errors.New("locked amount is not supported for the selected network")
 			}
 		}
 
 		// Check locked amount is not negative
 		if amount == nil || amount.ToInt().Sign() < 0 {
-			return ErrorLockedAmountNotNegative
+			return errors.New("locked amount must not be negative")
 		}
 
 		// Check if locked chain ID is a duplicate
@@ -468,7 +469,7 @@ func validateFromLockedAmount(fromLockedAmount map[uint64]*hexutil.Big, isTestne
 	}
 	if (!isTestnetMode && excludedChainCount == len(supportedNetworks)) ||
 		(isTestnetMode && excludedChainCount == len(supportedTestNetworks)) {
-		return ErrorLockedAmountExcludesAllSupported
+		return errors.New("all supported chains are excluded, routing impossible")
 	}
 	return nil
 }
diff --git a/services/wallet/router/router_v2_test.go b/services/wallet/router/router_v2_test.go
index fb4f8266b..40b26cb82 100644
--- a/services/wallet/router/router_v2_test.go
+++ b/services/wallet/router/router_v2_test.go
@@ -3,6 +3,7 @@ package router
 import (
 	"context"
 	"database/sql"
+	"errors"
 	"math/big"
 	"testing"
 
@@ -2635,7 +2636,7 @@ func TestValidateInputData(t *testing.T) {
 				TokenID:     pathprocessor.SttSymbol,
 				testnetMode: true,
 			},
-			expectedError: ErrorENSRegisterRequires,
+			expectedError: errors.New("username and public key are required for ENSRegister"),
 		},
 		{
 			name: "ENSRegister missing public key",
@@ -2645,7 +2646,7 @@ func TestValidateInputData(t *testing.T) {
 				TokenID:     pathprocessor.SttSymbol,
 				testnetMode: true,
 			},
-			expectedError: ErrorENSRegisterRequires,
+			expectedError: errors.New("username and public key are required for ENSRegister"),
 		},
 		{
 			name: "ENSRegister invalid token on testnet",
@@ -2656,7 +2657,7 @@ func TestValidateInputData(t *testing.T) {
 				TokenID:     "invalidtoken",
 				testnetMode: true,
 			},
-			expectedError: ErrorENSRegisterTestNetSTTOnly,
+			expectedError: errors.New("only STT is supported for ENSRegister on testnet"),
 		},
 		{
 			name: "ENSRegister invalid token on mainnet",
@@ -2666,7 +2667,7 @@ func TestValidateInputData(t *testing.T) {
 				PublicKey: "validpublickey",
 				TokenID:   "invalidtoken",
 			},
-			expectedError: ErrorENSRegisterSNTOnly,
+			expectedError: errors.New("only SNT is supported for ENSRegister"),
 		},
 		{
 			name: "ENSRelease valid data",
@@ -2681,7 +2682,7 @@ func TestValidateInputData(t *testing.T) {
 			input: &RouteInputParams{
 				SendType: ENSRelease,
 			},
-			expectedError: ErrorENSReleaseRequires,
+			expectedError: errors.New("username is required for ENSRelease"),
 		},
 		{
 			name: "ENSSetPubKey valid data",
@@ -2698,7 +2699,7 @@ func TestValidateInputData(t *testing.T) {
 				SendType:  ENSSetPubKey,
 				PublicKey: "validpublickey",
 			},
-			expectedError: ErrorENSSetPubKeyRequires,
+			expectedError: errors.New("username and public key are required for ENSSetPubKey"),
 		},
 		{
 			name: "ENSSetPubKey missing public key",
@@ -2706,7 +2707,7 @@ func TestValidateInputData(t *testing.T) {
 				SendType: ENSSetPubKey,
 				Username: "validusername",
 			},
-			expectedError: ErrorENSSetPubKeyRequires,
+			expectedError: errors.New("username and public key are required for ENSSetPubKey"),
 		},
 		{
 			name: "ENSSetPubKey invalid ENS username",
@@ -2715,21 +2716,21 @@ func TestValidateInputData(t *testing.T) {
 				Username:  "invalidusername",
 				PublicKey: "validpublickey",
 			},
-			expectedError: ErrorENSSetPubKeyRequires,
+			expectedError: errors.New("username and public key are required for ENSSetPubKey"),
 		},
 		{
 			name: "StickersBuy missing packID",
 			input: &RouteInputParams{
 				SendType: StickersBuy,
 			},
-			expectedError: ErrorStickersBuyRequires,
+			expectedError: errors.New("packID is required for StickersBuy"),
 		},
 		{
 			name: "Swap missing toTokenID",
 			input: &RouteInputParams{
 				SendType: Swap,
 			},
-			expectedError: ErrorSwapRequires,
+			expectedError: errors.New("toTokenID is required for Swap"),
 		},
 		{
 			name: "Swap tokenID equal to toTokenID",
@@ -2738,7 +2739,7 @@ func TestValidateInputData(t *testing.T) {
 				TokenID:   "token",
 				ToTokenID: "token",
 			},
-			expectedError: ErrorSwapTokenIDMustBeDifferent,
+			expectedError: errors.New("tokenID and toTokenID must be different"),
 		},
 		{
 			name: "Swap both amountIn and amountOut set",
@@ -2749,7 +2750,7 @@ func TestValidateInputData(t *testing.T) {
 				AmountIn:  (*hexutil.Big)(big.NewInt(100)),
 				AmountOut: (*hexutil.Big)(big.NewInt(100)),
 			},
-			expectedError: ErrorSwapAmountInAmountOutMustBeExclusive,
+			expectedError: errors.New("only one of amountIn or amountOut can be set"),
 		},
 		{
 			name: "Swap negative amountIn",
@@ -2759,7 +2760,7 @@ func TestValidateInputData(t *testing.T) {
 				ToTokenID: "token2",
 				AmountIn:  (*hexutil.Big)(big.NewInt(-100)),
 			},
-			expectedError: ErrorSwapAmountInMustBePositive,
+			expectedError: errors.New("amountIn must be positive"),
 		},
 		{
 			name: "Swap negative amountOut",
@@ -2769,7 +2770,7 @@ func TestValidateInputData(t *testing.T) {
 				ToTokenID: "token2",
 				AmountOut: (*hexutil.Big)(big.NewInt(-100)),
 			},
-			expectedError: ErrorSwapAmountOutMustBePositive,
+			expectedError: errors.New("amountOut must be positive"),
 		},
 		{
 			name: "fromLockedAmount with supported network on testnet",
@@ -2798,7 +2799,7 @@ func TestValidateInputData(t *testing.T) {
 				},
 				testnetMode: true,
 			},
-			expectedError: ErrorLockedAmountNotSupportedNetwork,
+			expectedError: errors.New("locked amount is not supported for the selected network"),
 		},
 		{
 			name: "fromLockedAmount with unsupported network on testnet",
@@ -2808,7 +2809,7 @@ func TestValidateInputData(t *testing.T) {
 				},
 				testnetMode: true,
 			},
-			expectedError: ErrorLockedAmountNotSupportedNetwork,
+			expectedError: errors.New("locked amount is not supported for the selected network"),
 		},
 		{
 			name: "fromLockedAmount with unsupported network on mainnet",
@@ -2817,7 +2818,7 @@ func TestValidateInputData(t *testing.T) {
 					999: (*hexutil.Big)(big.NewInt(10)),
 				},
 			},
-			expectedError: ErrorLockedAmountNotSupportedNetwork,
+			expectedError: errors.New("locked amount is not supported for the selected network"),
 		},
 		{
 			name: "fromLockedAmount with negative amount",
@@ -2826,7 +2827,7 @@ func TestValidateInputData(t *testing.T) {
 					walletCommon.EthereumMainnet: (*hexutil.Big)(big.NewInt(-10)),
 				},
 			},
-			expectedError: ErrorLockedAmountNotNegative,
+			expectedError: errors.New("locked amount must not be negative"),
 		},
 		{
 			name: "fromLockedAmount with zero amount",
@@ -2856,7 +2857,7 @@ func TestValidateInputData(t *testing.T) {
 					walletCommon.ArbitrumMainnet: (*hexutil.Big)(big.NewInt(0)),
 				},
 			},
-			expectedError: ErrorLockedAmountExcludesAllSupported,
+			expectedError: errors.New("all supported chains are excluded, routing impossible"),
 		},
 		{
 			name: "fromLockedAmount with all supported test networks with zero amount",
@@ -2868,7 +2869,7 @@ func TestValidateInputData(t *testing.T) {
 				},
 				testnetMode: true,
 			},
-			expectedError: ErrorLockedAmountExcludesAllSupported,
+			expectedError: errors.New("all supported chains are excluded, routing impossible"),
 		},
 	}