diff --git a/package-lock.json b/package-lock.json
index 685e05c..01ec2eb 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "@orionprotocol/sdk",
-  "version": "0.20.42",
+  "version": "0.20.45",
   "lockfileVersion": 2,
   "requires": true,
   "packages": {
     "": {
       "name": "@orionprotocol/sdk",
-      "version": "0.20.42",
+      "version": "0.20.45",
       "hasInstallScript": true,
       "license": "ISC",
       "dependencies": {
diff --git a/package.json b/package.json
index 363a5af..9560eb9 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@orionprotocol/sdk",
-  "version": "0.20.43-rc0",
+  "version": "0.20.43-rc1",
   "description": "Orion Protocol SDK",
   "main": "./lib/index.cjs",
   "module": "./lib/index.js",
diff --git a/src/Unit/Exchange/generateSwapCalldata.ts b/src/Unit/Exchange/generateSwapCalldata.ts
index f0ac04c..91f3fe6 100644
--- a/src/Unit/Exchange/generateSwapCalldata.ts
+++ b/src/Unit/Exchange/generateSwapCalldata.ts
@@ -23,27 +23,22 @@ import { generateFeePaymentCall } from "./callGenerators/feePayment.js";
 
 export type Factory = "UniswapV2" | "UniswapV3" | "Curve" | "OrionV2" | "OrionV3";
 
-export type GenerateSwapCalldataWithUnitParams = {
+type BaseGenerateSwapCalldataParams = {
   amount: BigNumberish;
   minReturnAmount: BigNumberish;
   initiatorAddress: string;
   receiverAddress: string;
-  matcher: AddressLike,
-  feeToken: AddressLike,
-  fee: BigNumberish;
   path: ArrayLike<SingleSwap>;
+  matcher?: AddressLike,
+  feeToken?: AddressLike,
+  fee?: BigNumberish;
+}
+
+export type GenerateSwapCalldataWithUnitParams = BaseGenerateSwapCalldataParams & {
   unit: Unit;
 };
 
-export type GenerateSwapCalldataParams = {
-  amount: BigNumberish;
-  minReturnAmount: BigNumberish;
-  initiatorAddress: string;
-  receiverAddress: string;
-  path: ArrayLike<SingleSwap>;
-  matcher: AddressLike,
-  feeToken: AddressLike,
-  fee: BigNumberish;
+export type GenerateSwapCalldataParams = BaseGenerateSwapCalldataParams & {
   exchangeContractAddress: AddressLike;
   wethAddress: AddressLike;
   curveRegistryAddress: AddressLike;
@@ -347,10 +342,6 @@ async function payFeeToMatcher(
   calls: BytesLike[],
   swapDescription: LibValidator.SwapDescriptionStruct,
 ) {
-  console.log(matcher)
-  console.log(feeAmount)
-  console.log(feeToken)
-  console.log(swapDescription.dstToken)
   if (BigInt(feeAmount) !== 0n && feeToken === swapDescription.dstToken) {
     const feePaymentCall = generateFeePaymentCall(matcher, feeToken, feeAmount)
     calls.push(feePaymentCall)
diff --git a/src/services/Aggregator/index.ts b/src/services/Aggregator/index.ts
index 82c3b2a..64cdc45 100644
--- a/src/services/Aggregator/index.ts
+++ b/src/services/Aggregator/index.ts
@@ -8,7 +8,7 @@ import errorSchema from './schemas/errorSchema.js';
 import placeAtomicSwapSchema from './schemas/placeAtomicSwapSchema.js';
 import { AggregatorWS } from './ws/index.js';
 import { atomicSwapHistorySchema } from './schemas/atomicSwapHistorySchema.js';
-import type { BasicAuthCredentials, SignedCancelOrderRequest, SignedOrder } from '../../types.js';
+import type { BasicAuthCredentials, OrderSource, SignedCancelOrderRequest, SignedOrder } from '../../types.js';
 import {
   pairConfigSchema, aggregatedOrderbookSchema,
   exchangeOrderbookSchema, poolReservesSchema,
@@ -196,8 +196,7 @@ class Aggregator {
     isCreateInternalOrder: boolean,
     isReversedOrder?: boolean,
     partnerId?: string,
-    fromWidget?: boolean,
-    source?: 'TERMINAL' | 'SWAP_UI',
+    source?: OrderSource,
     rawExchangeRestrictions?: string | undefined,
   ) => {
     const headers = {
@@ -207,7 +206,6 @@ class Aggregator {
         'X-Reverse-Order': isReversedOrder ? 'true' : 'false',
       },
       ...(partnerId !== undefined) && { 'X-Partner-Id': partnerId },
-      ...(fromWidget !== undefined) && { 'X-From-Widget': fromWidget ? 'true' : 'false' },
       ...(source !== undefined) && { 'X-Source': source },
       ...this.basicAuthHeaders,
     };
diff --git a/src/types.ts b/src/types.ts
index 4685276..dcc0324 100644
--- a/src/types.ts
+++ b/src/types.ts
@@ -454,3 +454,5 @@ export type AtomicSwap = Partial<
   refundTx?: TransactionInfo | undefined
   liquidityMigrationTx?: TransactionInfo | undefined
 }
+
+export type OrderSource = 'TERMINAL_MARKET' | 'TERMINAL_LIMIT' | 'SWAP_UI' | 'WIDGET';