BODS Management console : Adapter configuration Error

Hi all,

I have created an custom adapter.But while configuring it in BODS management console it's giving error.

Error :

Could not find element '' in file 'C:\ProgramData\SAP BusinessObjects\Data Services/adapters/install/Custom_adapter.xml'. Error while processing XML configuration files 'C:\ProgramData\SAP BusinessObjects\Data Services/adapters/config/templates/Custom_adapter.xml' or 'C:\ProgramData\SAP BusinessObjects\Data Services/adapters/install/Custom_adapter.xml'.

I am not understanding what is the cause of this error.

Please tell me why this error is coming...

Please help me.