Parameter is not passed to SICF service call

Issue:

Ex. if you want to call a transaction with parameter using ITS service in webdypro, the parameter is not passed to the webgui screen eventhough you passed the correct field name

Logon to R/3 with the user credential check is there is any SAP inbox alert is there.

Apply this note http://service.sap.com/sap/support/notes/1465767

and set parameter in SICF your service GUI Parameter ~NO_LOGON_USEREXIT to 1