As a user I would like the error message to tell me what the problem is, so I can fix it.

GIVEN I am on the Item page or wbeditentity or Special:NewItem
WHEN I enter a label that is too long and submit
THEN I expect the error message to be 'Label must not be more than x characters long'

GIVEN I am on the Item page or wbeditentity or Special:NewItem
WHEN I enter a description that is too long and submit
THEN I expect the error message to be 'Description must not be more than x characters long'

GIVEN I am on the Item page or wbeditentity or Special:NewItem
WHEN I enter an alias that is too long and submit
THEN I expect the error message to be 'Alias must not be more than x characters long'

Tasks:

• Add a message and use it in the Validator code