Calling another ITS service from existing ITS service

Hi to Everyone,
I would like your advice on calling another ITS service from existing ITS service.
From my current ITS service eg. "Z_TESTA", i wish to call another ITS service "Z_TESTB". The problem is that it always prompt for userid and password when i called the 2nd ITS service. However, user already enter the password & id when they login to the 1st ITS service. Is there a way to call this new ITS service w/o the userid & password prompt again?
Below is the codes that we used to call the new ITS service:
(a) "http://.../scripts/wgate/webgui/!?~transaction=z_testb"
OR
(b) "http://.../scripts/wgate/z_testb/!"
We used both method (a) and (b) but same outcome. Thank you in advance!
YanaJ

Hi YanaJ,
in order to skip a manual login you have to have the credentials somewhere. If you disabled cookies, what I told you will not work. Another possibility would the usage of X509 client certificates. But this requires that you have a setup that distributes the certificates of all of your users. I personally nether setup such scenario. Maybe someone other can explain what you have to do.
Best regards,
Klaus

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WCF forum link:
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