id	summary	reporter	owner	description	type	status	component	version	severity	resolution	keywords	cc	stage	has_patch	needs_docs	needs_tests	needs_better_patch	easy	ui_ux
28458	Add ModelMultipleChoiceField.validate_choices()	Daniel Hahler	gasparb16	"I've done this initially in the context of #27148.

While it is not required to work around this anymore, it still is useful for customization and was ACKed in https://github.com/django/django/pull/7181#issuecomment-261079604.

[https://github.com/django/django/pull/7181 PR]"	New feature	closed	Forms	dev	Normal	wontfix			Accepted	1	0	0	1	1	0