After upgrading from 9.4 to 10.2 and consolidating 2 landscapes into 1, Spectrum OneClick will not start. The tomcat service starts but the tomcat log references the now non existent landscape in the following error message:
UserModelDomainList: could not obtain the name for domain >landscape name<
The retired landscape is still visible in OneClick web administration landscapes page, as a null entry, but is not referenced in the landscape map of the main landscape server or anywhere else on the Spectrum system. The configurations are all as they should be.
At the date of publishing this article, this has been reproduced in Spectrum 10.2.2 and Spectrum 10.2.3, but does not reproduce on any other version.
This has also been seen on Spectrum r10.2.1 OneClick servers post OS patching and maintenance including a reboot. No upgrade was performed and the script resolved the problem.