SAP MDG uncaught exception " CX_BOL_EXCEPTION"

Hi Experts,

After completing configuration for contact person UIBB.

Am getting screens as mentioned below, when I fill the data and click on done, it is throwing exception.

"CX_BOL_EXCEPTION", Class - CL_CRM_BOL_ENTITY, Method - IS_SEND_ACTIVE.

Code:

method IS_SEND_ACTIVE .

* check if entity exist in buffer

   if ME->MY_MANAGER_ENTRY is not bound.

     raise exception type CX_BOL_EXCEPTION

       exporting

         TEXTID = CX_BOL_EXCEPTION=>ENTITY_ALREADY_FREED.

   endif.

   RV_RESULT =   ME->MY_MANAGER_ENTRY->SENDABLE.

Endmethod.

I have not found any blogs which are helpful, please guide me if someone faced with similar situation.

Any help will be greatly appreciated.

Many Thanks,

Swathi