I am using CT from 2013-06-28 and seems like this is causing problems as code values are different in 2014-03-28 version that is used by the validator. That’s why we need an option to specify CT version in the validator.
As a temporary solution you can replaced a “SDTM Terminology.odm.xml” file in “…\config\data” folder by Terminology version you used for your study ( http://evs.nci.nih.gov/ftp1/CDISC/SDTM/Archive/ ).
The file name needs to be exactly the same as original one, without date of version.
As I understand OpenCDISC 1.5 uses only SDTM CT for checks. When using it for ADaM CT codelists it will report this error.
There are very few ADaM codelists, so it can be easily checked manually or the codelists can be added to the xml file mentioned above. Anyway it will be nice if OpenCDISC can load ADaM CT xml file in the future.