You can block a customer account in AR so that postings are no longer made to that account. You have to block a customer account before marking a customer master record for deletion.
Example : You would also block a customer that you use only as an alternative dunning recipient, so that nobody can post to that customer by mistake.
In Sales and Distribution (SD) application component, you can set the following blocks for a customer :
* Posting block
* Order block
* Delivery block
* Invoicing block
