Duplicated fields found: 'Condtype', 'CondType' (CondType in item)

Hello,

   I have published a web service to the registry from an standard BAPI and I have tested successfully in the WSNavigator. But when in Visual Composer I drag the service to the design area it shows me the following error,

   "Duplicated fields found: 'Condtype', 'CondType' (CondType in item)"

  I dont know where modify this fields, and I dont know what was the wrong step, because the others web services works fine.

Thanks

Regards

SU