Based on your EBR enablement reports, it appears you have XX% custom objects.
You can do the following:
in your 12.0 APPL_TOP, look for any folders starting with xx
select * from dba_users where username like 'XX%';
Run adsplice after completing the AD.C/TXK.C Delta 10 patching as there were bugs on base 12.2.0 adsplice. That is why it comes after the AD/TXK patching in the upgrade guide.