[TYPO3-mvc] Where does form.errors come from

[Claus Fassing]

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Hello,

I'm using a controller argument validation.
@validate $object Tx_Myext_Domain_Validator_ObjectValidator

In this validator I add the error message.
$this->addError('The given subject was empty.', 1221560718);

This message do not appear in the FE with form.errors.
Where does form.errors come from and how can I touch this ?
Which object related to form.errors ?

Looks like that the from.errors only appear from domain model field
validation. Can I inject there an error, or which mechanism do I have to
handle localized (error) messages ?

Regards Claus
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