How do I invoke decision service of business rules in soa suite 11g?

Question

How do i invoke the decision service of my business rules in SOA 11g.
I have an invoke activity in my bpel process which invokes my decision service from the dictionary BUT
it fails saying that the "name" attribute (NCNAME type) has invalid value while calling the method 'callFunctionStateful'/'callFunctionStateful' !!
What value do I pass in that attribute? Please help.
Input:
<input>
<callFunctionStateful_InputVariable>
<part name="payload">
<callFunctionStateful name="">
<parameterList>
<customerdetails>
<name>susmit</name>
<address>kolkata</address>
<sex>male</sex>
<cellnumber>54355</cellnumber>
</customerdetails>
</parameterList>
</callFunctionStateful>
</part>
</callFunctionStateful_InputVariable>
</input>
Fault:
<bpelFault><faultType> <message>0</message></faultType><remoteFault xmlns="http://schemas.oracle.com/bpel/extension"><part name="summary"><summary>oracle.fabric.common.FabricInvocationException: Schema validation failed for message part payload. Please ensure at the message sender level that the data sent is schema compliant.</summary></part><part name="detail"><detail>Invalid value '' for attribute: 'name'</detail></part><part name="code"><code>null</code></part></remoteFault></bpelFault>

Answer 1

Provide the name of the Decision Service as specified in the .decs file under the tag <decisionService name="........".
Regards
Albin I