Hello Karthik,
to directly answer your question: Function Module RSPO_BUILD_DEVICE_KEY is responsible for automatically creating the short name of an Output Device.
However, based on your description it seems there is an inconsistency between the printer tables. RSPO_BUILD_DEVICE_KEY was not built to handle such inconsistencies - in fact there are no Reports which would handle them. (Such a solution would be most likely the deletion of the incorrect Output Device-entries, which would cause "sudden disappearance" of some Output Devices.)
Therefore the solution here is that the Basis Administrator needs to go through the printer tables and check
- what the inconsistent entries are
- what can be done with the inconsistent entries.
(The most easiest solution would be to delete all of the inconsistent entries, then rebuild the Output Devices which have been destroyed in this procedure - however, its feasability needs to be seriously considered, especially not to cause any additional inconsistencies.)
Best regards,
Laszlo