Attention
TYPO3 v7 has reached its end-of-life November 30th, 2018 and is not maintained by the community anymore. Looking for a stable version? Use the version switch on the top left.
There is no further ELTS support. It is recommended that you upgrade your project and use a supported version of TYPO3.
Verifying the $TCA¶
Note
This page is for an outdated TYPO3 version (7.6). For newer versions, you can find the information in:
TYPO3 Explained: Extending the TCA Array (7.6)
You may find it necessary – at some point – to verify the full
structure of the $TCA
in your TYPO3 installation. The System >
Configuration module makes it possible to have an overview of the
complete $TCA
, with all customizations taken into account.

Checking the existence of the new field via the Configuration module¶
If you cannot find your new field, it probably means that you have made some mistake.
This view is also useful when trying to find out where to insert a new field, to explore the combination of types and palettes that may be used for the table that we want to extend.