invoiced sales order not deleted when i use report number 299 why

when i use administration-IT administration -data deletion-sales documents-deleted invoiced sales order then i write No of order that invoiced then sell to customer no then bill to customer no then make OK it not applied and not error show why

Delete Invoiced Sales Orders Batch Job

This batch job deletes sales order that have been shipped and invoiced. The program checks that only fully invoiced orders are deleted. If there are comments on the orders, they are also deleted.

You can use the batch job after you have used the facilities for combining shipments, that is, the Get Shipment function on the sales invoices or the combine shipments batch job. These facilities do not delete the orders.

You can define what is included in the batch job by setting filters. You can set additional fields on the tab by clicking the Field field, then clicking the AssistButton that appears to the right. Fill in the fields as follows:

Sales Order

No.: Enter the numbers of the orders to be included in the batch job. To see the existing customers, click the Filter field, then click the AssistButton that appears to the right.

Sell-to Customer No.: If you want the batch job to delete orders for specific sell-to customers, enter the customer numbers here. To see the existing customers, click the Filter field, then click the AssistButton that appears to the right.

Bill-to Customer No.: If you want the batch job to delete orders for a specific bill-to customer, enter the customer numbers here. To see the existing customers, click the Filter field, then click the AssistButton that appears to the right.

Click the up-arrow at the lower left-hand corner of the window to see the result of the filters you have defined for the table.

Click the OK button to start the batch job. If you do not want to run the batch job now, click Cancel to close the window.