diff --git a/baselines/routingtest/src/v1/test_service_client.ts.baseline b/baselines/routingtest/src/v1/test_service_client.ts.baseline
index 18652bd84..9ce6d882d 100644
--- a/baselines/routingtest/src/v1/test_service_client.ts.baseline
+++ b/baselines/routingtest/src/v1/test_service_client.ts.baseline
@@ -343,7 +343,7 @@ export class TestServiceClient {
     options = options || {};
     options.otherArgs = options.otherArgs || {};
     options.otherArgs.headers = options.otherArgs.headers || {};let routingParameter = {};
-      if((typeof request.name !== "undefined") && RegExp('(?<database>projects)/[^/]+/databases/[^/]+/documents').test(request.name!)){
+      if ((typeof request.name !== "undefined") && RegExp('(?<database>projects)/[^/]+/databases/[^/]+/documents').test(request.name!)){
         Object.assign(routingParameter, { database: request.name!.match(RegExp('(?<database>projects/[^/]+/databases/[^/]+)'))![0]})}
 
         options.otherArgs.headers[
@@ -423,10 +423,10 @@ export class TestServiceClient {
     options = options || {};
     options.otherArgs = options.otherArgs || {};
     options.otherArgs.headers = options.otherArgs.headers || {};let routingParameter = {};
-      if((typeof request.name !== "undefined") && RegExp('[^/]+').test(request.name!)){
+      if ((typeof request.name !== "undefined") && RegExp('[^/]+').test(request.name!)){
         Object.assign(routingParameter, { name: request.name!.match(RegExp('[^/]+'))![0]})}
 
-      if((typeof request.name !== "undefined") && RegExp('(?<routing_id>(?:/.*)?)').test(request.name!)){
+      if ((typeof request.name !== "undefined") && RegExp('(?<routing_id>(?:/.*)?)').test(request.name!)){
         Object.assign(routingParameter, { routing_id: request.name!.match(RegExp('(?<routing_id>.*)'))![0]})}
 
         options.otherArgs.headers[
@@ -506,13 +506,13 @@ export class TestServiceClient {
     options = options || {};
     options.otherArgs = options.otherArgs || {};
     options.otherArgs.headers = options.otherArgs.headers || {};let routingParameter = {};
-      if((typeof request.parentId !== "undefined") && RegExp('(?<database>projects)/[^/]+').test(request.parentId!)){
+      if ((typeof request.parentId !== "undefined") && RegExp('(?<database>projects)/[^/]+').test(request.parentId!)){
         Object.assign(routingParameter, { database: request.parentId!.match(RegExp('(?<database>projects/[^/]+)'))![0]})}
 
-      if((typeof request.nest1.nest2.nameId !== "undefined") && RegExp('(?<database>projects)/[^/]+/databases/[^/]+/documents').test(request.nest1.nest2.nameId!)){
-        Object.assign(routingParameter, { database: request.nest1.nest2.nameId!.match(RegExp('(?<database>projects/[^/]+/databases/[^/]+)'))![0]})}
+      if ((typeof request.nest1?.nest2?.nameId !== "undefined") && RegExp('(?<database>projects)/[^/]+/databases/[^/]+/documents').test(request.nest1?.nest2?.nameId!)){
+        Object.assign(routingParameter, { database: request.nest1?.nest2?.nameId!.match(RegExp('(?<database>projects/[^/]+/databases/[^/]+)'))![0]})}
 
-      if((typeof request.anotherParentId !== "undefined") && RegExp('(?<routing_id>projects)/[^/]+/databases/[^/]+/documents').test(request.anotherParentId!)){
+      if ((typeof request.anotherParentId !== "undefined") && RegExp('(?<routing_id>projects)/[^/]+/databases/[^/]+/documents').test(request.anotherParentId!)){
         Object.assign(routingParameter, { routing_id: request.anotherParentId!.match(RegExp('(?<routing_id>projects/[^/]+)'))![0]})}
 
         options.otherArgs.headers[
diff --git a/templates/typescript_gapic/_util.njk b/templates/typescript_gapic/_util.njk
index 79f44b584..ed78a1798 100644
--- a/templates/typescript_gapic/_util.njk
+++ b/templates/typescript_gapic/_util.njk
@@ -266,8 +266,8 @@ request.{{ oneComment.paramName.toCamelCase() }}
     let routingParameter = {};
 {%- for paramArray in method.dynamicRoutingRequestParams %}
   {%- for param in paramArray %}
-      if((typeof request.{{ param.fieldRetrieve }} !== "undefined") && RegExp('{{ param.messageRegex | safe }}').test(request.{{ param.fieldRetrieve }}!)){
-        Object.assign(routingParameter, { {{ param.fieldSend }}: request.{{ param.fieldRetrieve }}!.match(RegExp('{{ param.namedSegment | safe }}'))![0]})}
+      if ((typeof request.{{ param.fieldRetrieve.join('?.') }} !== "undefined") && RegExp('{{ param.messageRegex | safe }}').test(request.{{ param.fieldRetrieve.join('?.') }}!)){
+        Object.assign(routingParameter, { {{ param.fieldSend }}: request.{{ param.fieldRetrieve.join('?.') }}!.match(RegExp('{{ param.namedSegment | safe }}'))![0]})}
 {% endfor -%}
 {%- endfor %}
         options.otherArgs.headers[
diff --git a/typescript/src/schema/proto.ts b/typescript/src/schema/proto.ts
index e02f82f8d..d92611b0d 100644
--- a/typescript/src/schema/proto.ts
+++ b/typescript/src/schema/proto.ts
@@ -664,7 +664,7 @@ export function getDynamicHeaderRequestParams(
 // messageRegex is the regex of the path template that the message field should match.
 // namedSegment is the regex capture of the named value of the field.
 export interface DynamicRoutingParameters {
-  fieldRetrieve: string;
+  fieldRetrieve: string[];
   fieldSend: string;
   messageRegex: string;
   namedSegment: string;
@@ -673,11 +673,14 @@ export interface DynamicRoutingParameters {
 // The field to be retrieved needs to be converted into camelCase
 export function convertFieldToCamelCase(field: string) {
   const camelCaseFields: string[] = [];
+  if (field === '') {
+    return camelCaseFields;
+  }
   const fieldsToRetrieve = field.split('.');
   fieldsToRetrieve.forEach(field => {
     camelCaseFields.push(field.toCamelCase());
   });
-  return camelCaseFields.join('.');
+  return camelCaseFields;
 }
 
 // This parses a single Routing Parameter and returns a MapRoutingParameters interface.
@@ -685,7 +688,7 @@ export function getSingleRoutingHeaderParam(
   rule: protos.google.api.IRoutingParameter
 ): DynamicRoutingParameters {
   let dynamicRoutingRule: DynamicRoutingParameters = {
-    fieldRetrieve: '',
+    fieldRetrieve: [],
     fieldSend: '',
     messageRegex: '',
     namedSegment: '',
diff --git a/typescript/test/unit/proto.ts b/typescript/test/unit/proto.ts
index 6f1cd7df9..76a28a781 100644
--- a/typescript/test/unit/proto.ts
+++ b/typescript/test/unit/proto.ts
@@ -130,7 +130,7 @@ describe('src/schema/proto.ts', () => {
       const expectedRoutingParameters: DynamicRoutingParameters[][] = [
         [
           {
-            fieldRetrieve: '',
+            fieldRetrieve: [],
             fieldSend: '',
             messageRegex: '',
             namedSegment: '',
@@ -160,19 +160,19 @@ describe('src/schema/proto.ts', () => {
       const expectedRoutingParameters: DynamicRoutingParameters[][] = [
         [
           {
-            fieldRetrieve: 'name',
+            fieldRetrieve: ['name'],
             fieldSend: 'routing_id',
             messageRegex: '(?<routing_id>projects)/[^/]+(?:/.*)?',
             namedSegment: '(?<routing_id>projects/[^/]+)',
           },
           {
-            fieldRetrieve: 'database',
+            fieldRetrieve: ['database'],
             fieldSend: 'routing_id',
             messageRegex: '(?<routing_id>(?:/.*)?)',
             namedSegment: '(?<routing_id>.*)',
           },
           {
-            fieldRetrieve: 'database',
+            fieldRetrieve: ['database'],
             fieldSend: 'routing_id',
             messageRegex:
               '(?<routing_id>projects)/[^/]+/databases/[^/]+/documents/[^/]+(?:/.*)?',
@@ -199,7 +199,7 @@ describe('src/schema/proto.ts', () => {
       const expectedRoutingParameters: DynamicRoutingParameters[][] = [
         [
           {
-            fieldRetrieve: 'name',
+            fieldRetrieve: ['name'],
             fieldSend: 'routing_id',
             messageRegex: '(?<routing_id>projects)/[^/]+(?:/.*)?',
             namedSegment: '(?<routing_id>projects/[^/]+)',
@@ -207,7 +207,7 @@ describe('src/schema/proto.ts', () => {
         ],
         [
           {
-            fieldRetrieve: 'appProfileId',
+            fieldRetrieve: ['appProfileId'],
             fieldSend: 'profile_id',
             messageRegex: '(?<profile_id>projects)/[^/]+(?:/.*)?',
             namedSegment: '(?<profile_id>projects/[^/]+)',
@@ -238,13 +238,13 @@ describe('src/schema/proto.ts', () => {
       const expectedRoutingParameters: DynamicRoutingParameters[][] = [
         [
           {
-            fieldRetrieve: 'name',
+            fieldRetrieve: ['name'],
             fieldSend: 'routing_id',
             messageRegex: '(?<routing_id>projects)/[^/]+(?:/.*)?',
             namedSegment: '(?<routing_id>projects/[^/]+)',
           },
           {
-            fieldRetrieve: 'name',
+            fieldRetrieve: ['name'],
             fieldSend: 'routing_id',
             messageRegex:
               'test/(?<routing_id>projects)/[^/]+/databases/[^/]+/documents/[^/]+(?:/.*)?',
@@ -253,7 +253,7 @@ describe('src/schema/proto.ts', () => {
         ],
         [
           {
-            fieldRetrieve: 'appProfileId',
+            fieldRetrieve: ['appProfileId'],
             fieldSend: 'profile_id',
             messageRegex: '(?<profile_id>projects)/[^/]+(?:/.*)?',
             namedSegment: '(?<profile_id>projects/[^/]+)',
@@ -269,19 +269,21 @@ describe('src/schema/proto.ts', () => {
 
   describe('should return a string set to camelCase', () => {
     it('should return this to camelCase', () => {
-      assert.deepStrictEqual(
-        convertFieldToCamelCase('name.name2.name3'),
-        'name.name2.name3'
-      );
-      assert.deepStrictEqual(convertFieldToCamelCase(''), '');
-      assert.deepStrictEqual(convertFieldToCamelCase('parent_id'), 'parentId');
-      assert.deepStrictEqual(
-        convertFieldToCamelCase('app_profile_id'),
-        'appProfileId'
-      );
+      assert.deepStrictEqual(convertFieldToCamelCase('name.name2.name3'), [
+        'name',
+        'name2',
+        'name3',
+      ]);
+      assert.deepStrictEqual(convertFieldToCamelCase(''), []);
+      assert.deepStrictEqual(convertFieldToCamelCase('parent_id'), [
+        'parentId',
+      ]);
+      assert.deepStrictEqual(convertFieldToCamelCase('app_profile_id'), [
+        'appProfileId',
+      ]);
       assert.deepStrictEqual(
         convertFieldToCamelCase('name.parent_id.another_parent_id'),
-        'name.parentId.anotherParentId'
+        ['name', 'parentId', 'anotherParentId']
       );
     });
   });
@@ -293,7 +295,7 @@ describe('src/schema/proto.ts', () => {
         pathTemplate: 'test/database',
       };
       const expectedRoutingParameters: DynamicRoutingParameters = {
-        fieldRetrieve: '',
+        fieldRetrieve: [],
         fieldSend: '',
         messageRegex: '',
         namedSegment: '',
@@ -306,7 +308,7 @@ describe('src/schema/proto.ts', () => {
     it('works with no parameters', () => {
       const routingRule: protos.google.api.IRoutingParameter = {};
       const expectedRoutingParameters: DynamicRoutingParameters = {
-        fieldRetrieve: '',
+        fieldRetrieve: [],
         fieldSend: '',
         messageRegex: '',
         namedSegment: '',
@@ -321,7 +323,7 @@ describe('src/schema/proto.ts', () => {
         field: 'name',
       };
       const expectedRoutingParameters: DynamicRoutingParameters = {
-        fieldRetrieve: 'name',
+        fieldRetrieve: ['name'],
         fieldSend: 'name',
         messageRegex: '[^/]+',
         namedSegment: '[^/]+',
@@ -337,7 +339,7 @@ describe('src/schema/proto.ts', () => {
         pathTemplate: '{routing_id=**}',
       };
       const expectedRoutingParameters: DynamicRoutingParameters = {
-        fieldRetrieve: 'appProfileId.parentId',
+        fieldRetrieve: ['appProfileId', 'parentId'],
         fieldSend: 'routing_id',
         messageRegex: '(?<routing_id>(?:/.*)?)',
         namedSegment: '(?<routing_id>.*)',
@@ -353,7 +355,7 @@ describe('src/schema/proto.ts', () => {
         pathTemplate: '{routing_id=projects/*}/**',
       };
       const expectedRoutingParameters: DynamicRoutingParameters = {
-        fieldRetrieve: 'appProfileId',
+        fieldRetrieve: ['appProfileId'],
         fieldSend: 'routing_id',
         messageRegex: '(?<routing_id>projects)/[^/]+(?:/.*)?',
         namedSegment: '(?<routing_id>projects/[^/]+)',