Connection Timeout Exception in Katalon while testing a web service request

I am currently testing my web service through the Katalon Studio 8.5.2 version. I am getting the connection timeout exception for a few requests, and it is working fine in Postman.
Could someone help me resolve this issue?

Steps:

I created the post request through the object repository, but it was not working while I was doing the test request.
Then I called that post request in my test cases and got this connection timed out error.

Note: My request body is quite large in size, as noticed in the postman’s reading of 342 B.

Exception:

=============== ROOT CAUSE =====================
Caused by: com.kms.katalon.core.webservice.exception.ConnectionTimeoutException: ConnectionTimeoutException: Connection Timed Out. 

For trouble shooting, please visit: https://docs.katalon.com/katalon-studio/docs/troubleshooting.html
================================================

01-06-2023 11:11:22 AM Test Cases/RemoveRoles/UpdatePrivacyConsent_CollectionPoint/Wireless

Elapsed time: 1m - 49.274s

Test Cases/RemoveRoles/UpdatePrivacyConsent_CollectionPoint/Wireless FAILED.
Reason:
com.kms.katalon.core.exception.StepFailedException: Unable to send request (Root cause: com.kms.katalon.core.webservice.exception.SendRequestException: com.kms.katalon.core.webservice.exception.ConnectionTimeoutException: ConnectionTimeoutException: Connection Timed Out. 
	at com.kms.katalon.core.webservice.common.HttpUtil.sendRequest(HttpUtil.java:173)
	at com.kms.katalon.core.webservice.common.BasicRequestor.send(BasicRequestor.java:58)
	at com.kms.katalon.core.webservice.helper.WebServiceCommonHelper.sendRequest(WebServiceCommonHelper.java:55)
	at com.kms.katalon.core.webservice.keyword.builtin.SendRequestKeyword$_sendRequest_closure1.doCall(SendRequestKeyword.groovy:40)
	at com.kms.katalon.core.webservice.keyword.builtin.SendRequestKeyword$_sendRequest_closure1.call(SendRequestKeyword.groovy)
	at com.kms.katalon.core.keyword.internal.KeywordMain.runKeyword(KeywordMain.groovy:74)
	at com.kms.katalon.core.webservice.keyword.builtin.SendRequestKeyword.sendRequest(SendRequestKeyword.groovy:38)
	at com.kms.katalon.core.webservice.keyword.builtin.SendRequestKeyword.execute(SendRequestKeyword.groovy:33)
	at com.kms.katalon.core.keyword.internal.KeywordExecutor.executeKeywordForPlatform(KeywordExecutor.groovy:74)
	at com.kms.katalon.core.webservice.keyword.WSBuiltInKeywords.sendRequest(WSBuiltInKeywords.groovy:41)
	at com.kms.katalon.core.webservice.keyword.WSBuiltInKeywords$sendRequest.call(Unknown Source)
	at Wireless.run(Wireless:34)
	at com.kms.katalon.core.main.ScriptEngine.run(ScriptEngine.java:194)
	at com.kms.katalon.core.main.ScriptEngine.runScriptAsRawText(ScriptEngine.java:119)
	at com.kms.katalon.core.main.TestCaseExecutor.runScript(TestCaseExecutor.java:448)
	at com.kms.katalon.core.main.TestCaseExecutor.doExecute(TestCaseExecutor.java:439)
	at com.kms.katalon.core.main.TestCaseExecutor.processExecutionPhase(TestCaseExecutor.java:418)
	at com.kms.katalon.core.main.TestCaseExecutor.accessMainPhase(TestCaseExecutor.java:410)
	at com.kms.katalon.core.main.TestCaseExecutor.execute(TestCaseExecutor.java:285)
	at com.kms.katalon.core.main.TestCaseMain.runTestCase(TestCaseMain.java:142)
	at com.kms.katalon.core.main.TestCaseMain.runTestCase(TestCaseMain.java:133)
	at com.kms.katalon.core.main.TestCaseMain$runTestCase$0.call(Unknown Source)
	at TempTestCase1672983676176.run(TempTestCase1672983676176.groovy:25)
Caused by: com.kms.katalon.core.webservice.exception.ConnectionTimeoutException: ConnectionTimeoutException: Connection Timed Out. 
	at com.kms.katalon.core.webservice.common.HttpUtil.sendRequest(HttpUtil.java:147)
	at com.kms.katalon.core.webservice.common.BasicRequestor.send(BasicRequestor.java:58)
	at com.kms.katalon.core.webservice.helper.WebServiceCommonHelper.sendRequest(WebServiceCommonHelper.java:55)
	at com.kms.katalon.core.webservice.keyword.builtin.SendRequestKeyword$_sendRequest_closure1.doCall(SendRequestKeyword.groovy:40)
	at com.kms.katalon.core.webservice.keyword.builtin.SendRequestKeyword$_sendRequest_closure1.call(SendRequestKeyword.groovy)
	at com.kms.katalon.core.keyword.internal.KeywordMain.runKeyword(KeywordMain.groovy:74)
	at com.kms.katalon.core.webservice.keyword.builtin.SendRequestKeyword.sendRequest(SendRequestKeyword.groovy:38)
	at com.kms.katalon.core.webservice.keyword.builtin.SendRequestKeyword.execute(SendRequestKeyword.groovy:33)
	at com.kms.katalon.core.keyword.internal.KeywordExecutor.executeKeywordForPlatform(KeywordExecutor.groovy:74)
	at com.kms.katalon.core.webservice.keyword.WSBuiltInKeywords.sendRequest(WSBuiltInKeywords.groovy:41)
	at com.kms.katalon.core.webservice.keyword.WSBuiltInKeywords$sendRequest.call(Unknown Source)
	at Script1672929393610.run(Script1672929393610.groovy:34)
	... 11 more
)
	at com.kms.katalon.core.keyword.internal.KeywordMain.stepFailed(KeywordMain.groovy:50)
	at com.kms.katalon.core.keyword.internal.KeywordMain.stepFailed(KeywordMain.groovy)
	at com.kms.katalon.core.keyword.internal.KeywordMain.runKeyword(KeywordMain.groovy:76)
	at com.kms.katalon.core.webservice.keyword.builtin.SendRequestKeyword.sendRequest(SendRequestKeyword.groovy:38)
	at com.kms.katalon.core.webservice.keyword.builtin.SendRequestKeyword.execute(SendRequestKeyword.groovy:33)
	at com.kms.katalon.core.keyword.internal.KeywordExecutor.executeKeywordForPlatform(KeywordExecutor.groovy:74)
	at com.kms.katalon.core.webservice.keyword.WSBuiltInKeywords.sendRequest(WSBuiltInKeywords.groovy:41)
	at com.kms.katalon.core.webservice.keyword.WSBuiltInKeywords$sendRequest.call(Unknown Source)
	at Wireless.run(Wireless:34)
	at com.kms.katalon.core.main.ScriptEngine.run(ScriptEngine.java:194)
	at com.kms.katalon.core.main.ScriptEngine.runScriptAsRawText(ScriptEngine.java:119)
	at com.kms.katalon.core.main.TestCaseExecutor.runScript(TestCaseExecutor.java:448)
	at com.kms.katalon.core.main.TestCaseExecutor.doExecute(TestCaseExecutor.java:439)
	at com.kms.katalon.core.main.TestCaseExecutor.processExecutionPhase(TestCaseExecutor.java:418)
	at com.kms.katalon.core.main.TestCaseExecutor.accessMainPhase(TestCaseExecutor.java:410)
	at com.kms.katalon.core.main.TestCaseExecutor.execute(TestCaseExecutor.java:285)
	at com.kms.katalon.core.main.TestCaseMain.runTestCase(TestCaseMain.java:142)
	at com.kms.katalon.core.main.TestCaseMain.runTestCase(TestCaseMain.java:133)
	at com.kms.katalon.core.main.TestCaseMain$runTestCase$0.call(Unknown Source)
	at TempTestCase1672983676176.run(TempTestCase1672983676176.groovy:25)
Caused by: com.kms.katalon.core.webservice.exception.SendRequestException: com.kms.katalon.core.webservice.exception.ConnectionTimeoutException: ConnectionTimeoutException: Connection Timed Out. 
	at com.kms.katalon.core.webservice.common.HttpUtil.sendRequest(HttpUtil.java:173)
	at com.kms.katalon.core.webservice.common.BasicRequestor.send(BasicRequestor.java:58)
	at com.kms.katalon.core.webservice.helper.WebServiceCommonHelper.sendRequest(WebServiceCommonHelper.java:55)
	at com.kms.katalon.core.webservice.keyword.builtin.SendRequestKeyword$_sendRequest_closure1.doCall(SendRequestKeyword.groovy:40)
	at com.kms.katalon.core.webservice.keyword.builtin.SendRequestKeyword$_sendRequest_closure1.call(SendRequestKeyword.groovy)
	at com.kms.katalon.core.keyword.internal.KeywordMain.runKeyword(KeywordMain.groovy:74)
	... 17 more
Caused by: com.kms.katalon.core.webservice.exception.ConnectionTimeoutException: ConnectionTimeoutException: Connection Timed Out. 
	at com.kms.katalon.core.webservice.common.HttpUtil.sendRequest(HttpUtil.java:147)
	... 22 more

Hi,

Have you reached out this thread yet: Connection Timed Out error message received during API request 'POST'?

Yes, I have reached out. My issue is that I am able to send small to medium kind of post requests. When I send the bulk request in the request body, I am getting this timeout issue. It works fine in Postman