No signature to verify error

I am encoutring the error

No signature provided to verify

when i am trying to send a transcation to WM


I am encoring the error below while verification in the signature please help

       [COLOR=black][FONT=&quot]2008-11-19 09:23:54 GMT+03:00 [/font][/color]
     [COLOR=black][FONT=&quot] [ISS.0086.9083] No signature   provided to verify [/font][/color]
     [COLOR=black][FONT=&quot]Stack trace data ...[/font][/color]
     [COLOR=black][FONT=&quot]a3b12bb0b60211dd84deee80577ee7fa [/font][/color]

You didn’t provide any details to work with. I’m going to guess that the WSD provider node that corresponds to the service you are invoking specifies that a digital signature is required and that your request does not contain one.