MDG BP Company Code Custom Table Enhancement

Hi,

our requirement is to store "custom banking data(into z-table)" into the company code area. So far, so good!

After enhancing the MDG BP comp. code area, by a new z-table, with the help of "SAP How - To Guide: Extend the MDG Business Partner – Node Extension (Reuse Option )" we have several issues.

1) How to get the general banking data at the SAVE_ADDITIONAL_OBJECT method in the Z_ECC_Handler class ?
And why is the field BKVID used in the Data and not in the data_key ? I need the general banking data for BKVID = xxxx

2) We enhanced the UIBB company code area section with a new custom UIBB section(z-table with NEW button) for customer and vendor and did the wiring, as well.

Customer:
MDG process and entering new entries to the custom table(comp. code section) is working fine for the customer. Everything is stored at the custom z-table

a) By adding the standard UIBB for general banking data into the UIBB company code area section, the button "new"(custom UIBB section) is invisible .

Vendor:
b) The button "new" to entering new data to the custom table(comp. code section) is invisible for the MDG vendor process.

Any ideas what is needed to get the button enabled ?

Thx

Gordon