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Note. Deleting of marked objects may take significant time. Generally, it is executed as a background process. You can speed up this operation if you select the Block all operations to speed up the deletion option at the bottom of the form. In this case, the operation will have the highest priority and will be performed faster.
You can use the 
button to clear all the check boxes and the 
button to select all the check boxes. Manually you can clear or select a check box for any document or object.
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For example, in the screenshot above, the object (Price With Discount 10%) cannot be deleted, because a number of contracts use it, and this price type is referred to in a number of customer orders and invoices. To delete this price type, you will need to mark these linked documents for deleting (by using the the 
button) or replace in documents this price type for another one by using the Edit 
button). However, in many cases, a list of linked documents is not so long, and you can quickly and properly process it. Then, you can click the Retry Deletion button on the toolbar under the form heading.
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