We had setup a new Co. Code - "HWAA" (with new Orgs & Plant) to replace existing Co. Code - "MWBB" (with new Orgs & Plant). The "MWBB" will stop receiving new logistics orders, but how to change the setting(s) to block users creating new orders including Sales, Purchasing & Productoin docs. ?
Other than blocking master data you can control through user authorisation access.Ask your Security team to create a security role If there are using MWBB co code and plant data they should get an error you do not have authorisation to create data.
That is the reason remove authorisation role for creating and Change.Give Display role for review the documents.
The most efficient way to tackle your problem would be to put a block at the customer/ Vendor master level to block the creation of orders for all Sales areas/ company code for all the customers in that company code.
You can use T-Code XD99 or MASS to achieve the same.