Legal Control Blocks in SD Documents 
Use
If the result of legal control is negative (for example, the item requires a license but a valid license is not available for the material), this function blocks the sales order or delivery from further transactions.
Features
Setting Blocks
You can set blocks on items in sales and distribution (SD) documents manually or have the system set them automatically.
Manual Blocks
According to export law, checks must be made on all exports to other countries to discover how the exports are used. Therefore, it is possible for you to block an export transaction manually. When processing a sales order, you can block it from further processing by setting a user status.
Automatic Blocks
The result of the legal control the system carries out is also stored in the document. Based on the results of legal control, the system sets the legal control status at item level.

If you make the appropriate settings in Customizing, a log of legal control procedures for a document appears when you post it.
Removing Blocks
If a system status EXLS leads to an order or an order item is blocked for further processing as a result of legal control, you can remove the block manually. For example, you can use this function to unblock an item that is blocked due to an embargo. Removing a block requires special authorization.
To remove the block, assign the item or sales order an active, valid license created in the system. You can manually remove blocks independently of normal sales order processing. See
Manually Removing Export Control Blocks in SD Documents.