Hello,
check SAP note 1156585 for help first. The deletion of a package that is not yet empty always requires at least 2 transport requests.
First delete all dev. objects visible in the SE80 tree and release the related transport request. During the request release, R3Trans recognizes when a dev. object is really deleted (i. e. no meta data entries exist) and deletes then the related TADIR entry. Never delete TADIR entries manually !!
If the package <Package_Name> is 'empty' (i. e. no more dev. objects are assigned to it), TADIR for that package at most contains two entries: R3TR DEVC <Package_Name> and R3TR AVAS ... . Such a package can be deleted using SE80 or SE21. Don't care about the R3TR AVAS, that will be deleted by R3Trans during transport request release.
If the package can still not be deleted, check table TADIR using SE16 and enter the package name in the field DEVCLASS. If there are entries besides the R3TR DEVC <Package_Name> and R3TR AVAS, create a new transport request in TA SE09, delete the empty request task, double-click onto the request header and enter all TADIR entries (except R3TR DEVC <Package_Name>) being displayed for the package in SE16. Release the transport request. After having released it, check in the requests piece list, which entries are not marked with the 'Deleted' icon. Open the export log of the transport request and check the entries of the objects which are not correctly deleted. The log shows in which database tables still meta data entries exist. Delete these database entries e. g. by writing a little report with the respective DELETE statements.
Again create a new transport request in TA SE09, delete the empty request task, double-click onto the request header and enter all TADIR entries (except R3TR DEVC <Package_Name>) being displayed for the package in SE16. Release the transport request. Now, all TADIR entries of the dev. objects of the package should have been deleted by R3Trans during the transport request release.
Now delete the empty package and release the transport request.
Regards,
Stefan