Siebel Error Message is Truncated in WorkFlow Process

Hello, 

I have espose a WorkFlow as Web Service and catch the posssible error, unfortunately the error message is truncated. The Error Message is Also logged in a Table but again the error message is truncated.  The complete Error Message is necessary to find the problem.

1.1.                    Response Soap

<SOAP-ENV:Envelope xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">

   <SOAP-ENV:Body>

      <ns:VFInserPdaAnagrafica_Output xmlns:ns="http://siebel.com/asi/">

         <ns:Error_spcCode>(SBL-BPR-00162)</ns:Error_spcCode>

         <ns:Error_spcMessage>Errore nel richiamo del servizio 'EAI Siebel Adapter', metodo 'Upsert' al passo 'Insert PDA Anagrafica'.(SBL-BPR-00162)</ns:Error_spcMessage>