diff --git a/OmiseSDKObjc/OMSConstants.h b/OmiseSDKObjc/OMSConstants.h
deleted file mode 100644
index ecf43853..00000000
--- a/OmiseSDKObjc/OMSConstants.h
+++ /dev/null
@@ -1,71 +0,0 @@
-@import Foundation;
-
-
-typedef NSString * OMSSourceTypeValue NS_EXTENSIBLE_STRING_ENUM;
-
-extern OMSSourceTypeValue const _Nonnull OMSSourceTypeValueInternetBankingBAY;
-extern OMSSourceTypeValue const _Nonnull OMSSourceTypeValueInternetBankingBBL;
-extern OMSSourceTypeValue const _Nonnull OMSSourceTypeValueMobileBankingSCB;
-extern OMSSourceTypeValue const _Nonnull OMSSourceTypeValueMobileBankingOCBCPAO;
-extern OMSSourceTypeValue const _Nonnull OMSSourceTypeValueMobileBankingOCBC;
-extern OMSSourceTypeValue const _Nonnull OMSSourceTypeValueMobileBankingBAY;
-extern OMSSourceTypeValue const _Nonnull OMSSourceTypeValueMobileBankingBBL;
-extern OMSSourceTypeValue const _Nonnull OMSSourceTypeValueMobileBankingKTB;
-extern OMSSourceTypeValue const _Nonnull OMSSourceTypeValueAlipay;
-extern OMSSourceTypeValue const _Nonnull OMSSourceTypeValueAlipayCN;
-extern OMSSourceTypeValue const _Nonnull OMSSourceTypeValueAlipayHK;
-extern OMSSourceTypeValue const _Nonnull OMSSourceTypeValueBillPaymentTescoLotus;
-extern OMSSourceTypeValue const _Nonnull OMSSourceTypeValueBarcodeAlipay;
-extern OMSSourceTypeValue const _Nonnull OMSSourceTypeValueDana;
-extern OMSSourceTypeValue const _Nonnull OMSSourceTypeValueGcash;
-extern OMSSourceTypeValue const _Nonnull OMSSourceTypeValueInstallmentBAY;
-extern OMSSourceTypeValue const _Nonnull OMSSourceTypeValueInstallmentFirstChoice;
-extern OMSSourceTypeValue const _Nonnull OMSSourceTypeValueInstallmentBBL;
-extern OMSSourceTypeValue const _Nonnull OMSSourceTypeValueInstallmentMBB;
-extern OMSSourceTypeValue const _Nonnull OMSSourceTypeValueInstallmentKTC;
-extern OMSSourceTypeValue const _Nonnull OMSSourceTypeValueInstallmentKBank;
-extern OMSSourceTypeValue const _Nonnull OMSSourceTypeValueInstallmentSCB;
-extern OMSSourceTypeValue const _Nonnull OMSSourceTypeValueInstallmentCiti;
-extern OMSSourceTypeValue const _Nonnull OMSSourceTypeValueInstallmentTTB;
-extern OMSSourceTypeValue const _Nonnull OMSSourceTypeValueInstallmentUOB;
-extern OMSSourceTypeValue const _Nonnull OMSSourceTypeValueKakaoPay;
-extern OMSSourceTypeValue const _Nonnull OMSSourceTypeValueEContext;
-extern OMSSourceTypeValue const _Nonnull OMSSourceTypeValuePromptPay;
-extern OMSSourceTypeValue const _Nonnull OMSSourceTypeValuePayNow;
-extern OMSSourceTypeValue const _Nonnull OMSSourceTypeValueTouchNGo;
-extern OMSSourceTypeValue const _Nonnull OMSSourceTypeValueTouchNGoAlipayPlus;
-extern OMSSourceTypeValue const _Nonnull OMSSourceTypeValueTrueMoney;
-extern OMSSourceTypeValue const _Nonnull OMSSourceTypeValueTrueMoneyJumpApp;
-extern OMSSourceTypeValue const _Nonnull OMSSourceTypeValuePointsCiti;
-extern OMSSourceTypeValue const _Nonnull OMSSourceTypeValueFpx;
-extern OMSSourceTypeValue const _Nonnull OMSSourceTypeValueMobileBankingKBank;
-extern OMSSourceTypeValue const _Nonnull OMSSourceTypeValueRabbitLinepay;
-extern OMSSourceTypeValue const _Nonnull OMSSourceTypeValueGrabPay;
-extern OMSSourceTypeValue const _Nonnull OMSSourceTypeValueGrabPayRms;
-extern OMSSourceTypeValue const _Nonnull OMSSourceTypeValueBoost;
-extern OMSSourceTypeValue const _Nonnull OMSSourceTypeValueShopeePay;
-extern OMSSourceTypeValue const _Nonnull OMSSourceTypeValueShopeePayJumpApp;
-extern OMSSourceTypeValue const _Nonnull OMSSourceTypeValueMaybankQRPay;
-extern OMSSourceTypeValue const _Nonnull OMSSourceTypeValueDuitNowQR;
-extern OMSSourceTypeValue const _Nonnull OMSSourceTypeValueDuitNowOBW;
-extern OMSSourceTypeValue const _Nonnull OMSSourceTypeValueAtome;
-extern OMSSourceTypeValue const _Nonnull OMSSourceTypeValuePayPay;
-
-
-typedef NSString * OMSSupportedCurrencyCode NS_EXTENSIBLE_STRING_ENUM;
-
-extern OMSSupportedCurrencyCode const _Nonnull OMSSupportedCurrencyCodeTHB;
-extern OMSSupportedCurrencyCode const _Nonnull OMSSupportedCurrencyCodeJPY;
-extern OMSSupportedCurrencyCode const _Nonnull OMSSupportedCurrencyCodeIDR;
-extern OMSSupportedCurrencyCode const _Nonnull OMSSupportedCurrencyCodeSGD;
-extern OMSSupportedCurrencyCode const _Nonnull OMSSupportedCurrencyCodeUSD;
-extern OMSSupportedCurrencyCode const _Nonnull OMSSupportedCurrencyCodeGBP;
-extern OMSSupportedCurrencyCode const _Nonnull OMSSupportedCurrencyCodeEUR;
-extern OMSSupportedCurrencyCode const _Nonnull OMSSupportedCurrencyCodeMYR;
-
-extern OMSSupportedCurrencyCode const _Nonnull OMSSupportedCurrencyCodeAUD;
-extern OMSSupportedCurrencyCode const _Nonnull OMSSupportedCurrencyCodeCAD;
-extern OMSSupportedCurrencyCode const _Nonnull OMSSupportedCurrencyCodeCHF;
-extern OMSSupportedCurrencyCode const _Nonnull OMSSupportedCurrencyCodeCNY;
-extern OMSSupportedCurrencyCode const _Nonnull OMSSupportedCurrencyCodeDKK;
-extern OMSSupportedCurrencyCode const _Nonnull OMSSupportedCurrencyCodeHKD;
diff --git a/OmiseSDKObjc/OMSConstants.m b/OmiseSDKObjc/OMSConstants.m
deleted file mode 100644
index 5916d00e..00000000
--- a/OmiseSDKObjc/OMSConstants.m
+++ /dev/null
@@ -1,66 +0,0 @@
-#import "OMSConstants.h"
-
-
-OMSSourceTypeValue const _Nonnull OMSSourceTypeValueInternetBankingBAY = @"internet_banking_bay";
-OMSSourceTypeValue const _Nonnull OMSSourceTypeValueInternetBankingBBL = @"internet_banking_bbl";
-OMSSourceTypeValue const _Nonnull OMSSourceTypeValueMobileBankingSCB = @"mobile_banking_scb";
-OMSSourceTypeValue const _Nonnull OMSSourceTypeValueMobileBankingOCBCPAO = @"mobile_banking_ocbc_pao";
-OMSSourceTypeValue const _Nonnull OMSSourceTypeValueMobileBankingOCBC = @"mobile_banking_ocbc";
-OMSSourceTypeValue const _Nonnull OMSSourceTypeValueMobileBankingKBank = @"mobile_banking_kbank";
-OMSSourceTypeValue const _Nonnull OMSSourceTypeValueMobileBankingBAY = @"mobile_banking_bay";
-OMSSourceTypeValue const _Nonnull OMSSourceTypeValueMobileBankingBBL = @"mobile_banking_bbl";
-OMSSourceTypeValue const _Nonnull OMSSourceTypeValueMobileBankingKTB = @"mobile_banking_ktb";
-OMSSourceTypeValue const _Nonnull OMSSourceTypeValueAlipay = @"alipay";
-OMSSourceTypeValue const _Nonnull OMSSourceTypeValueAlipayCN = @"alipay_cn";
-OMSSourceTypeValue const _Nonnull OMSSourceTypeValueAlipayHK = @"alipay_hk";
-OMSSourceTypeValue const _Nonnull OMSSourceTypeValueDana = @"dana";
-OMSSourceTypeValue const _Nonnull OMSSourceTypeValueGcash = @"gcash";
-OMSSourceTypeValue const _Nonnull OMSSourceTypeValueKakaoPay = @"kakaopay";
-OMSSourceTypeValue const _Nonnull OMSSourceTypeValueTouchNGo = @"touch_n_go";
-OMSSourceTypeValue const _Nonnull OMSSourceTypeValueTouchNGoAlipayPlus = @"touch_n_go_alipay_plus";
-OMSSourceTypeValue const _Nonnull OMSSourceTypeValueBillPaymentTescoLotus = @"bill_payment_tesco_lotus";
-OMSSourceTypeValue const _Nonnull OMSSourceTypeValueBarcodeAlipay = @"barcode_alipay";
-OMSSourceTypeValue const _Nonnull OMSSourceTypeValueInstallmentBAY = @"installment_bay";
-OMSSourceTypeValue const _Nonnull OMSSourceTypeValueInstallmentFirstChoice = @"installment_first_choice";
-OMSSourceTypeValue const _Nonnull OMSSourceTypeValueInstallmentBBL = @"installment_bbl";
-OMSSourceTypeValue const _Nonnull OMSSourceTypeValueInstallmentMBB = @"installment_mbb";
-OMSSourceTypeValue const _Nonnull OMSSourceTypeValueInstallmentKTC = @"installment_ktc";
-OMSSourceTypeValue const _Nonnull OMSSourceTypeValueInstallmentKBank = @"installment_kbank";
-OMSSourceTypeValue const _Nonnull OMSSourceTypeValueInstallmentSCB = @"installment_scb";
-OMSSourceTypeValue const _Nonnull OMSSourceTypeValueInstallmentCiti = @"installment_citi";
-OMSSourceTypeValue const _Nonnull OMSSourceTypeValueInstallmentTTB = @"installment_ttb";
-OMSSourceTypeValue const _Nonnull OMSSourceTypeValueInstallmentUOB = @"installment_uob";
-OMSSourceTypeValue const _Nonnull OMSSourceTypeValueEContext = @"econtext";
-OMSSourceTypeValue const _Nonnull OMSSourceTypeValuePromptPay = @"promptpay";
-OMSSourceTypeValue const _Nonnull OMSSourceTypeValuePayNow = @"paynow";
-OMSSourceTypeValue const _Nonnull OMSSourceTypeValueTrueMoney = @"truemoney";
-OMSSourceTypeValue const _Nonnull OMSSourceTypeValueTrueMoneyJumpApp = @"truemoney_jumpapp";
-OMSSourceTypeValue const _Nonnull OMSSourceTypeValuePointsCiti = @"points_citi";
-OMSSourceTypeValue const _Nonnull OMSSourceTypeValueFpx = @"fpx";
-OMSSourceTypeValue const _Nonnull OMSSourceTypeValueRabbitLinepay = @"rabbit_linepay";
-OMSSourceTypeValue const _Nonnull OMSSourceTypeValueGrabPay = @"grabpay";
-OMSSourceTypeValue const _Nonnull OMSSourceTypeValueGrabPayRms = @"grabpay_rms";
-OMSSourceTypeValue const _Nonnull OMSSourceTypeValueBoost = @"boost";
-OMSSourceTypeValue const _Nonnull OMSSourceTypeValueShopeePay = @"shopeepay";
-OMSSourceTypeValue const _Nonnull OMSSourceTypeValueShopeePayJumpApp = @"shopeepay_jumpapp";
-OMSSourceTypeValue const _Nonnull OMSSourceTypeValueMaybankQRPay = @"maybank_qr";
-OMSSourceTypeValue const _Nonnull OMSSourceTypeValueDuitNowQR = @"duitnow_qr";
-OMSSourceTypeValue const _Nonnull OMSSourceTypeValueDuitNowOBW = @"duitnow_obw";
-OMSSourceTypeValue const _Nonnull OMSSourceTypeValueAtome = @"atome";
-OMSSourceTypeValue const _Nonnull OMSSourceTypeValuePayPay = @"paypay";
-
-OMSSupportedCurrencyCode const _Nonnull OMSSupportedCurrencyCodeTHB = @"THB";
-OMSSupportedCurrencyCode const _Nonnull OMSSupportedCurrencyCodeJPY = @"JPY";
-OMSSupportedCurrencyCode const _Nonnull OMSSupportedCurrencyCodeIDR = @"IDR";
-OMSSupportedCurrencyCode const _Nonnull OMSSupportedCurrencyCodeSGD = @"SGD";
-OMSSupportedCurrencyCode const _Nonnull OMSSupportedCurrencyCodeUSD = @"USD";
-OMSSupportedCurrencyCode const _Nonnull OMSSupportedCurrencyCodeGBP = @"GBP";
-OMSSupportedCurrencyCode const _Nonnull OMSSupportedCurrencyCodeEUR = @"EUR";
-OMSSupportedCurrencyCode const _Nonnull OMSSupportedCurrencyCodeMYR = @"MYR";
-
-OMSSupportedCurrencyCode const _Nonnull OMSSupportedCurrencyCodeAUD = @"AUD";
-OMSSupportedCurrencyCode const _Nonnull OMSSupportedCurrencyCodeCAD = @"CAD";
-OMSSupportedCurrencyCode const _Nonnull OMSSupportedCurrencyCodeCHF = @"CHF";
-OMSSupportedCurrencyCode const _Nonnull OMSSupportedCurrencyCodeCNY = @"CNY";
-OMSSupportedCurrencyCode const _Nonnull OMSSupportedCurrencyCodeDKK = @"DKK";
-OMSSupportedCurrencyCode const _Nonnull OMSSupportedCurrencyCodeHKD = @"HKD";