DescribeSObjectResult[] dsrArray = connection.describeSObjects(new String[] { objectToDescribe });

The above line is throwing the below error:

com.sforce.ws.ConnectionException: Unexpected element. Parser was expecting element 'urn:enterprise.soap.sforce.com:permissionable' but found 'urn:enterprise.soap.sforce.com:precision'
at com.sforce.ws.bind.TypeMapper.verifyTag(TypeMapper.java:386)
at com.sforce.ws.bind.TypeMapper.verifyElement(TypeMapper.java:415)
at com.sforce.soap.enterprise.Field.loadFields(Field.java:1)
at com.sforce.soap.enterprise.Field.load(Field.java:1)
at com.sforce.ws.bind.TypeMapper.readSingle(TypeMapper.java:628)
at com.sforce.ws.bind.TypeMapper.readArray(TypeMapper.java:528)
at com.sforce.ws.bind.TypeMapper.readObject(TypeMapper.java:506)
at com.sforce.soap.enterprise.DescribeSObjectResult.loadFields(DescribeSObjectResult.java:1)
at com.sforce.soap.enterprise.DescribeSObjectResult.load(DescribeSObjectResult.java:1)
at com.sforce.ws.bind.TypeMapper.readSingle(TypeMapper.java:628)
at com.sforce.ws.bind.TypeMapper.readArray(TypeMapper.java:528)
at com.sforce.ws.bind.TypeMapper.readObject(TypeMapper.java:506)
at com.sforce.soap.enterprise.DescribeSObjectsResponse_element.loadFields(DescribeSObjectsResponse_element.java:1)
at com.sforce.soap.enterprise.DescribeSObjectsResponse_element.load(DescribeSObjectsResponse_element.java:1)
at com.sforce.ws.bind.TypeMapper.readSingle(TypeMapper.java:628)
at com.sforce.ws.bind.TypeMapper.readObject(TypeMapper.java:504)
at com.sforce.ws.transport.SoapConnection.bind(SoapConnection.java:173)
at com.sforce.ws.transport.SoapConnection.receive(SoapConnection.java:147)
at com.sforce.ws.transport.SoapConnection.send(SoapConnection.java:98)
at com.sforce.soap.enterprise.EnterpriseConnection.describeSObjects(EnterpriseConnection.java:1)
at com.example.samples.QuickstartApiSample.describeSObjectsSample(QuickstartApiSample.java:171)
at com.example.samples.QuickstartApiSample.run(QuickstartApiSample.java:53)
at com.example.samples.QuickstartApiSample.main(QuickstartApiSample.java:43)

Hi, 

I read the salesforce api document and blog()and tried to call the web service with WSC, but I don't know how can I call the custom web service via WSC.

Any suggestion will be appreciated.