Breaking: #107380 - Removed "beforeFormDuplicate" hook 

See forge#107380

Description 

The hook $GLOBALS['TYPO3_CONF_VARS']['SC_OPTIONS']['ext/form']['beforeFormDuplicate'] has been removed in favor of the more powerful PSR-14 event BeforeFormIsDuplicatedEvent .

Impact 

Implementations of the removed hook are no longer executed in TYPO3 v14.0 and later.

Affected installations 

TYPO3 installations with custom extensions using this hook. The extension scanner reports any usage as a weak match.

Migration 

The hook has been removed without deprecation to allow extensions to remain compatible with both TYPO3 v13 (using the hook) and TYPO3 v14+ (using the new event). When implementing the event as well, no further deprecations will occur.

Use the PSR-14 Event to achieve the same or greater functionality.