jenkinsci/jenkins — pull request #968 by akiellor (2013-10-07 20:35:46+00:00)
Title: FIXES JENKINS-18434 - Added validation error to Parameterized build choice, removed hard error.

NOTE: Jenkins currently ignores form validation errors for all fields when changing job configuration. So job configuration can be saved in an erroneous state. The errors are retained when the configure page is revisited.