Error while adding custom fields in ERP quotation

I am trying to add custom fields to ERP quotation. So picked up ERP_H and added view BTCUSTOMER_H/CustomerH to its views. I have added the relevant custom fields to BTCUSTOMER_H/CustomerH. Now when I try displaying this, I get the following error..

Context generation failed in view BTCUSTOMER_H/CustomerH of UI Component ERP_H
An exception has occurred Exception Class  CX_BSP_WD_INCORRECT_IMPLEMENT - There is no node text 'BTAdminH' in controller ''.  
Method:  CL_BSP_WD_CONTROLLER=>DO_CONTEXT_NODE_BINDING  
Source Text Row:  39 
Initialization of view BTCUSTOMER_H/CustomerH of UI Component ERP_H failed
An exception has occurred Exception Class  CX_BSP_WD_INCORRECT_IMPLEMENT - There is no node text 'BTAdminH' in controller ''.  
Method:  CL_BSP_WD_CONTROLLER=>DO_CONTEXT_NODE_BINDING  
Source Text Row:  39 
Cannot display view ERP_H/HeaderOverviewpage of UI Component ERP_H
An exception has occurred Exception Class  CX_BSP_WD_INCORRECT_IMPLEMENT - There is no node text 'BTAdminH' in controller ''.  
Method:  CL_BSP_WD_CONTROLLER=>DO_CONTEXT_NODE_BINDING  
Source Text Row:  39 
Window ERP_H/MainWindow of UI Component ERP_H cannot be displayed
An exception has occurred Exception Class  CX_BSP_WD_RUNTIME_ERROR - View BTCUSTOMER_H/CustomerH in component ERP_H could not be bound  
Method:  CL_BSP_WD_VIEW_CONTROLLER=>BIND_VIEW  
Source Text Row:  165 

I have no prior experiance in UI development. Could someone explain me this error and how to fix this?

Regards,

Amar.