BOL entity Bxxx does not exist

Hello,

I try to create CRM Web UI Component.

But i cannot input BOL Entity and found message  "BOL entity Bxxx does not exist".

This is my step

1. Go to transaction BSP_WD_CMPWB. Enter component name (e.g. Zxx) in field component and click on create

2. Right click on view and choose create. A wizard will be displayed. Enter the following data in wizard.

2.1 Name – view name (e.g. Vxxx)

2.2 Model Node – model node name (e.g. Mxxxx)   

2.3 BOL Entity – Bxxx ==================>I found error message "BOL entity Bxxx does not exist" in this step.

Then i try to click on help but i found message  "No values found"

Could anyone shine some light on this problem please?