When issuing returned merchandise to the supplier
using Service module and if the
entered item is used in serial number tracking a window for selecting serial
numbers opens after the quantity is entered. All available serial numbers for
this item in issue warehouse are displayed, that is, all those serial numbers
you received with complaint.
You are informed if the selected serial number had not been delivered
by the supplier from document header:

Close the window clicking
.
Only a messageG: The line of issue is nonetheless created and the selected
serial number is linked to it.