Hi Pramod,
In addition to what SRK has suggested, the key to this requirement is how you place your condition table in access sequence. Ideally, it should be:
1st Access - sales org / billing type and customer
2nd Access - sales org / billing type
If you don't follow Specific to General principle for defining Accesses in access sequence. this will impact your existing setup.
Thanks, JP
Note: Your post is unmarked as question, as this a basic question related to access sequence configuration.