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Changing Official Document Numbers 
Prerequisites
If the company code works with lots, you have maintained the lot Customizing settings.
Procedure
If your company code works with lots, the system displays additional fields in the SD documents tab to allow you to select SD documents by lots and books.
If you enter a lot number, or a lot and book number, the system disregards any other entries that you make.
The system displays a list of the documents that you have selected.
