I got this issue resolved. I was using MC ID/PWD which is something workflow does not expect. I used my own ID/Password (administrator) and it worked. Thanks for all your help.

thanks cjpicc1 for reply.PFB the payload. id/password 1171720 as you can see 1171720 is the WF ID and internal name is just a 'Test Workflow'.And I am providing ID/PWD in a request and it is getting connected successfully. Below is the full response (has error) SOAP-ENV:Server SOP-330011 Erro...

Hi, I have a requirement wherein I have to start campaign workflow using SOAP request (extenally). I am doing it thru start method of 'workflowmethodssoap' WSDL. When I submit the request getting below error. SOAP-ENV:Server SOP-330011 Error while executing the method 'Start' of service 'xtk:workflo...