Processing a Reserved Document 
Prerequisites
You have reserved the document in at least one change master record.
Procedure
You see the Reservations in Engin.Change Mgmt. dialog box, which shows the change number(s) in which the document has already been reserved as a change object. In addition, you see the description(s) of the change number(s).
– Choose the change number. If you want to copy a change number to the Change number field (Basic Data screen) of your document info record, choose it.
– If the dialog box only contains one change number, the system copies the change number when the data is released.
– If you do not want to copy a change number now, choose Cancel in the Reservations in Engin.Change Mgmt. dialog box.