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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.