LoadRunner web_service_set_security Action Mismatch error

Loadrunner Published on:
Performance Test Tool

Just a quick heads up if you are having issues when using the web_services_set_security function in LoadRunner.

The web_service_set_security function is used to add security tokens to subsequent soap and web service calls. When replaying one of my web service scripts that use the web_services_security function I keep getting an “Action Mismatch” error.

Cause for the Action Mismatch Error

The script is using the web_services_set_security to create a message signature. But LoadRunner is sending the whole message with a Time Stamp, Body and Header.

This behavior is killing my application service because it only expects to receive the Body to be signed — not the whole message. Because of this behavior I keep getting a LR “Action Mismatch” error. After looking around in HP KB I found out this issue is a known product defect.

How to Resolve this LoadRunner Error

  • First grab the file DeleteSoapHeaders.zip from my download section.
  • Copy the DeleteSoapHeaders.dll to your Load Runners's bin folder


  • Next to configure the deleting headers choose either Method 1 Script Level or Method 2 Step Level below.

Method 1 Script Level

Making this change will send all the WSC's in the script without any header in the soap envelope.

  • Navigate to your LoadRunner script's directory and open the default.cfg file with a file editor like Notepad or Notepad++


  • Add a section called UserHandler to the very end of the default file. The exact section to copy is:

  • Save the file and run your script. The

    element should no longer appear in the soap envelope.

Method 2 Step Level

Making this change will only be applied to a specific step.

  • Add the step that you want to send without the headers to the script
  • Add the following lines of code to your step right before the BEGIN_ARGUMENTS element:


That should work

Let it rip – you should be good to go now. Hope it helps you.

16 responses to “LoadRunner web_service_set_security Action Mismatch error”

  1. Hi,
    This is a very helpful website. Can you help in how to script the Soap request which is parsing the data in CDATA? Load Runner is not recognizing the CDATA part.
    EX: <![CDATA[

    • Suman » Hi Suman – I’m not sure I would need more info. Are you getting this error? What are you trying to do?

  2. Hi !
    I’m getting an error message when replying my script after certificate is added. The thing is that certificate “ID VALUE” contains an ampersand ( & ) character. Could this be causing the issue, how can I fix this?

    xxx.c(35): Error: InvokeMethod failure: An error occurred while parsing EntityName. Line 1, position 148..
    xxx.c(35): Error: ExtractResultArg failure: Object reference not set to an instance of an object..
    xxx.c(35): Error: Web service call “xxx” execution failed

  3. Hey Joe,
    Thanks for sharing this invaluable information with us..it is indeed really helpful. I am currently running a web service script but keep getting the HTTP 401 error. I turned on the extended logs and it shows an invalid session or session ID expired. My question is that how should i fix this issue as there are no cookies involved and i have tried the web_set_user and web_set_security function but nothing seems to be working. Thanks for your help,

    • rahul » Hi Rahul –does trying either of the following help:
      1. Check Run-Time Settings–>Internet Protocol–>Preferences–>WinInet Replay instead of Socket (Windows Only).
      The WinINet functions support server and proxy authentication for http sessions.
      2.  Go to:
      – Run-Time Settings–>Internet Protocol–>Preferences–>Options.
      – Under “Authentication” section, change “Enable Integrated Authentication” to “Yes”.
      In this case, LoadRunner will use the username and password of the machine’s user to authenticate the session. 

  4. Hi Joe,
    i get below Notification when i run my script in Loadrunner. i want to get data on output window when i run script.
    can you help me out? thanks

    Action.c(2): Notify: Saving Parameter “GetYears_101_Response = False350Machine: COAURWEB54. Object reference not set to an instance of an object.”.
    Action.c(2): Notify: Saving Parameter “response = false350Machine: COAURWEB54. Object reference not set to an instance of an object.”.

  5. Hi Joe,
    Good Morning.
    I am scripting Web services for the first time. I have imported the WSDL, I have parameterized the input in the request. When I execute the script I am getting below error. Could you please guide me what to do in this case.

    Action.c(6): Error:InvokeMethod failure: Could not resolve address of host usbdsblweb941.global.baxter.com.
    Action.c(6): Error:ExtractResultArg failure: Object reference not set to an instance of an object..
    Action.c(6): Error:Web service call “CallBAXAssetMaster_101” execution failed.

    Looking forward for your help.

    • Hi are you able to bring up the WSDL in a browser with out using any tool? Is the WSDL from a live system or are you using a local copy of it?
      It is always recommended to consume the WSDL from a live system (in any environment) but otherwise it is important to copy all dependent files and edit the WSDL (and files) to resolve references.“

  6. Hi Joe,
    from where can i download the below mentioned file.
    I am encountring error as “Error:ExtractResultArg failure: Object reference not set to an instance of an object” while doing a webservice scripting using a WSDL Url
    First grab the file DeleteSoapHeaders.zip from my download section

Leave a Reply

Your email address will not be published. Required fields are marked *

This site uses Akismet to reduce spam. Learn how your comment data is processed.

Performance Test Tool