Prevent Quotation from CRM to R/3

Hi I need to Modify a BADI for the following requirement::

Prevent Replication of Quotation from CRM to R/3 based on the following conditions::

For OEM Quote:

Is sold-to-partner is Prospect

Is the product is Generic Part

If the above condition is 'yes' then add Distributor Lock on the Document.

For Distributor Quote:

Is the Sold-To used is ‘Disti-TBD’ customer (Prospect).

Is the product(Material) is Generic part.

Is the product is Registerable Ship & Debit part.

Is the product is non Registerable, Ship & Debit part.

if the above condition is 'yes' then add Distributor Lock on the Document.

How to implement a Technical solution for this in CRM BADI. I have a customized BADI.

Sunil