diff --git a/components/org.wso2.carbon.identity.conditional.auth.functions.http/src/main/java/org/wso2/carbon/identity/conditional/auth/functions/http/HTTPPostFunctionImpl.java b/components/org.wso2.carbon.identity.conditional.auth.functions.http/src/main/java/org/wso2/carbon/identity/conditional/auth/functions/http/HTTPPostFunctionImpl.java
index 56728a96..fea5c0a4 100644
--- a/components/org.wso2.carbon.identity.conditional.auth.functions.http/src/main/java/org/wso2/carbon/identity/conditional/auth/functions/http/HTTPPostFunctionImpl.java
+++ b/components/org.wso2.carbon.identity.conditional.auth.functions.http/src/main/java/org/wso2/carbon/identity/conditional/auth/functions/http/HTTPPostFunctionImpl.java
@@ -37,7 +37,7 @@
 import java.util.Map;
 
 import static org.apache.http.HttpHeaders.CONTENT_TYPE;
-
+import static org.wso2.carbon.identity.conditional.auth.functions.common.utils.CommonUtils.getPayloadDataMap;
 
 /**
  * Implementation of the {@link HTTPPostFunction}
@@ -111,20 +111,22 @@ public void httpPost(String endpointURL, Object... params) {
         setHeaders(request, headers);
 
         if (MapUtils.isNotEmpty(payloadData)) {
+
+            Map<String, Object> payloadDataMap = getPayloadDataMap(payloadData);
             /*
             For the header "Content-Type : application/x-www-form-urlencoded" request body data is set to
             UrlEncodedFormEntity format. For the other cases request body data is set to StringEntity format.
              */
             if (TYPE_APPLICATION_FORM_URLENCODED.equals(headers.get(CONTENT_TYPE))) {
                 List<NameValuePair> entities = new ArrayList<>();
-                for (Map.Entry<String, Object> dataElements : payloadData.entrySet()) {
+                for (Map.Entry<String, Object> dataElements : payloadDataMap.entrySet()) {
                     String value = (dataElements.getValue() != null) ? dataElements.getValue().toString() : null;
                     entities.add(new BasicNameValuePair(dataElements.getKey(), value));
                 }
                 request.setEntity(new UrlEncodedFormEntity(entities, StandardCharsets.UTF_8));
             } else {
                 JSONObject jsonObject = new JSONObject();
-                jsonObject.putAll(payloadData);
+                jsonObject.putAll(payloadDataMap);
                 request.setEntity(new StringEntity(jsonObject.toJSONString(), StandardCharsets.UTF_8));
             }
         }
diff --git a/components/org.wso2.carbon.identity.conditional.auth.functions.http/src/test/java/org/wso2/carbon/identity/conditional/auth/functions/http/HTTPPostFunctionImplTest.java b/components/org.wso2.carbon.identity.conditional.auth.functions.http/src/test/java/org/wso2/carbon/identity/conditional/auth/functions/http/HTTPPostFunctionImplTest.java
index 712de177..ada195a0 100644
--- a/components/org.wso2.carbon.identity.conditional.auth.functions.http/src/test/java/org/wso2/carbon/identity/conditional/auth/functions/http/HTTPPostFunctionImplTest.java
+++ b/components/org.wso2.carbon.identity.conditional.auth.functions.http/src/test/java/org/wso2/carbon/identity/conditional/auth/functions/http/HTTPPostFunctionImplTest.java
@@ -18,6 +18,8 @@
 
 package org.wso2.carbon.identity.conditional.auth.functions.http;
 
+import com.google.gson.Gson;
+import com.google.gson.JsonObject;
 import com.nimbusds.jose.JOSEException;
 import com.nimbusds.jose.JOSEObjectType;
 import com.nimbusds.jose.JWSAlgorithm;
@@ -94,6 +96,8 @@ public class HTTPPostFunctionImplTest extends JsSequenceHandlerAbstractTest {
     private static final String ALLOWED_DOMAIN = "abc";
     private static final String AUTHORIZATION = "Authorization";
     private static final String API_KEY_HEADER = "X-API-KEY";
+    public static final String HTTP_POST_PAYLOAD = "http-post-payload.json";
+    public static final String HTTP_POST_PAYLOAD_TEST_SP = "http-post-payload-test-sp.xml";
     private HTTPPostFunctionImpl httpPostFunction;
 
     @InjectMicroservicePort
@@ -229,6 +233,20 @@ public void testHttpPostMethodWithClientCredentialAuthConfig() throws JsTestExce
                         result);
     }
 
+    /**
+     * Test httpPost method with payload.
+     * Check if the payload data is sent with the request.
+     *
+     * @throws JsTestException
+     */
+    @Test
+    public void testHttpPostMethodWithPayload() throws JsTestException {
+
+        String result = executeHttpPostFunction("dummy-post-with-payload", HTTP_POST_PAYLOAD_TEST_SP);
+        assertEquals(result, SUCCESS, "The http post request was not successful. Result from request: "
+                + result);
+    }
+
     /**
      * Tests the behavior of the httpPost function when provided with null headers.
      *
@@ -291,7 +309,7 @@ private String executeHttpPostFunction(String path, String adaptiveAuthScript) t
         return context.getSelectedAcr();
     }
 
-    private void updateSPAuthScriptRequestUrl(ServiceProvider sp, String path) {
+    private void updateSPAuthScriptRequestUrl(ServiceProvider sp, String path) throws JsTestException {
 
         LocalAndOutboundAuthenticationConfig localAndOutboundAuthenticationConfig =
                 sp.getLocalAndOutBoundAuthenticationConfig();
@@ -303,7 +321,7 @@ private void updateSPAuthScriptRequestUrl(ServiceProvider sp, String path) {
         sp.setLocalAndOutBoundAuthenticationConfig(localAndOutboundAuthenticationConfig);
     }
 
-    private String getFormattedScript(String script, String path) {
+    private String getFormattedScript(String script, String path) throws JsTestException {
         switch (path) {
             case "dummy-post":
                 return String.format(script, getRequestUrl("dummy-post"));
@@ -318,6 +336,9 @@ private String getFormattedScript(String script, String path) {
             case "dummy-post-with-clientcredential-auth-config":
                 return String.format(script, getRequestUrl("dummy-post-with-clientcredential-auth-config"),
                         getRequestUrl("dummy-token-endpoint"));
+            case "dummy-post-with-payload":
+                JsonObject Payload = sequenceHandlerRunner.loadJson(HTTP_POST_PAYLOAD, this);
+                return String.format(script, Payload.toString(), getRequestUrl("dummy-post-with-payload"));
             default:
                 return null;
         }
@@ -466,6 +487,28 @@ public Map<String, String> dummyPostWithClientCredentialAuthConfig(@HeaderParam(
         return response;
     }
 
+    @POST
+    @Path("/dummy-post-with-payload")
+    @Consumes("application/json")
+    @Produces("application/json")
+    public Map<String, Object> dummyPostWithPayload(Map<String, Object> data) throws JsTestException {
+
+        JsonObject expectedPayload = sequenceHandlerRunner.loadJson(HTTP_POST_PAYLOAD, this);
+        Gson gson = new Gson();
+        String dataStr = gson.toJson(data);
+        JsonObject actualPayload = gson.fromJson(dataStr, JsonObject.class);
+        Map<String, Object> response = new HashMap<>();
+        response.put(STATUS, SUCCESS);
+        response.put("data", dataStr);
+
+        if (expectedPayload.equals(actualPayload)) {
+            return response;
+        } else {
+            throw new JsTestException("Payloads do not match. " +
+                    String.format("Expected payload: %s, Actual payload: %s", expectedPayload, actualPayload));
+        }
+    }
+
     /**
      * Dummy token endpoint to test the http post function with clientcredential auth config.
      *
diff --git a/components/org.wso2.carbon.identity.conditional.auth.functions.http/src/test/resources/org/wso2/carbon/identity/conditional/auth/functions/http/http-post-payload-test-sp.xml b/components/org.wso2.carbon.identity.conditional.auth.functions.http/src/test/resources/org/wso2/carbon/identity/conditional/auth/functions/http/http-post-payload-test-sp.xml
new file mode 100644
index 00000000..da35fef7
--- /dev/null
+++ b/components/org.wso2.carbon.identity.conditional.auth.functions.http/src/test/resources/org/wso2/carbon/identity/conditional/auth/functions/http/http-post-payload-test-sp.xml
@@ -0,0 +1,72 @@
+<!--
+  ~ Copyright (c) 2021, WSO2 Inc. (http://www.wso2.org).
+  ~
+  ~ WSO2 Inc. licenses this file to you under the Apache License,
+  ~ Version 2.0 (the "License"); you may not use this file except
+  ~ in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~ http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing,
+  ~ software distributed under the License is distributed on an
+  ~ "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+  ~ KIND, either express or implied.  See the License for the
+  ~ specific language governing permissions and limitations
+  ~ under the License.
+  -->
+<ServiceProvider>
+    <ApplicationID>1</ApplicationID>
+    <ApplicationName>default</ApplicationName>
+    <Description>Default Service Provider</Description>
+    <InboundAuthenticationConfig>
+        <InboundAuthenticationRequestConfigs>
+            <InboundAuthenticationRequestConfig>
+                <InboundAuthKey>default</InboundAuthKey>
+                <InboundAuthType></InboundAuthType>
+                <Properties></Properties>
+            </InboundAuthenticationRequestConfig>
+        </InboundAuthenticationRequestConfigs>
+    </InboundAuthenticationConfig>
+    <LocalAndOutBoundAuthenticationConfig>
+        <AuthenticationSteps>
+            <AuthenticationStep>
+                <StepOrder>1</StepOrder>
+                <LocalAuthenticatorConfigs>
+                    <LocalAuthenticatorConfig>
+                        <Name>BasicMockAuthenticator</Name>
+                        <DisplayName>basicauth</DisplayName>
+                        <IsEnabled>true</IsEnabled>
+                    </LocalAuthenticatorConfig>
+                </LocalAuthenticatorConfigs>
+                <SubjectStep>true</SubjectStep>
+                <AttributeStep>true</AttributeStep>
+            </AuthenticationStep>
+        </AuthenticationSteps>
+        <AuthenticationScript type="application/javascript" enabled="true"><![CDATA[
+function onLoginRequest(context) {
+var comprehensivePayload = %s;
+    httpPost('%s', comprehensivePayload, {
+                onSuccess : function(context, data) {
+                    Log.info('httpPost call success');
+                    context.selectedAcr = data.status;
+                    executeStep(1);
+                }, onFail : function(context, data) {
+                    Log.info('httpPost call failed');
+                    context.selectedAcr = 'FAILED';
+                    executeStep(1);
+                }
+            });
+}
+
+]]></AuthenticationScript>
+        <AuthenticationType>flow</AuthenticationType>
+    </LocalAndOutBoundAuthenticationConfig>
+    <RequestPathAuthenticatorConfigs></RequestPathAuthenticatorConfigs>
+    <InboundProvisioningConfig></InboundProvisioningConfig>
+    <OutboundProvisioningConfig></OutboundProvisioningConfig>
+    <ClaimConfig>
+        <AlwaysSendMappedLocalSubjectId>true</AlwaysSendMappedLocalSubjectId>
+    </ClaimConfig>
+    <PermissionAndRoleConfig></PermissionAndRoleConfig>
+</ServiceProvider>
diff --git a/components/org.wso2.carbon.identity.conditional.auth.functions.http/src/test/resources/org/wso2/carbon/identity/conditional/auth/functions/http/http-post-payload.json b/components/org.wso2.carbon.identity.conditional.auth.functions.http/src/test/resources/org/wso2/carbon/identity/conditional/auth/functions/http/http-post-payload.json
new file mode 100644
index 00000000..1692934b
--- /dev/null
+++ b/components/org.wso2.carbon.identity.conditional.auth.functions.http/src/test/resources/org/wso2/carbon/identity/conditional/auth/functions/http/http-post-payload.json
@@ -0,0 +1,39 @@
+{
+  "stringKey": "stringValue",
+  "numberKey": 123,
+  "booleanKey": true,
+  "arrayKey": [
+    "arrayString",
+    456,
+    false,
+    {
+      "nestedObjectInArrayKey": "nestedObjectValue",
+      "nestedArrayInArrayKey": ["nestedArrayValue1", "nestedArrayValue2"]
+    }
+  ],
+  "objectKey": {
+    "objectStringKey": "objectStringValue",
+    "objectNumberKey": 789,
+    "objectBooleanKey": false,
+    "nestedObjectKey": {
+      "nestedObjectStringKey": "nestedObjectStringValue",
+      "nestedObjectArrayKey": [
+        "nestedArrayValue1",
+        101112,
+        true
+      ]
+    },
+    "arrayOfObjectsKey": [
+      {
+        "arrayOfObjectsStringKey": "arrayOfObjectsStringValue1",
+        "arrayOfObjectsNumberKey": 131415,
+        "arrayOfObjectsBooleanKey": true
+      },
+      {
+        "arrayOfObjectsStringKey": "arrayOfObjectsStringValue2",
+        "arrayOfObjectsNumberKey": 161718,
+        "arrayOfObjectsBooleanKey": false
+      }
+    ]
+  }
+}
\ No newline at end of file