Home › Forums › Backend Issues (wp-admin) › How to allow 2 char only on a text field? › Reply To: How to allow 2 char only on a text field?
Use an acf/validate_value filter https://www.advancedcustomfields.com/resources/acf-validate_value/.
Validation is done before saving.
I don’t understand the comment about data being saved in the DB.
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