Step 2:Then In holdings section,I enable the selection tick option.

Step 3:Then Delete selected items appears.

Step 4:I Click on Delete Selected Items.

Step 5:Then batch item deletion appears.In that section I enable the Delete records if no item remain and click onDelete Selected itemsbutton.

This is the way i delete the record and it's items.

My Question is...In cataloging,once I create a record,and add two items for that record with different Barcode(Access No).Then I deleted the both items and that record(above 5 Steps).Again,When I am going to upload a record,koha accept it and going to add an item with same barcode(which i was deleted earlier).The error message came."Barcode must be unique"......what is the problem?