Set a custom validation error message for one Caldera Forms field See: https://calderaforms.com/doc/caldera_forms_field_attributes/

caldera_forms_field_attributes-error-message.php

<?php
/**
 * Set a custom validation error message for one Caldera Forms field
 */
add_filter( 'caldera_forms_field_attributes', function($attrs, $field){
	//IMPORTANT - Change your field ID
	if ( 'fld1234' === $field[ 'ID'] ) {
		$attrs[ 'data-parsley-error-message' ] = 'You must enter a number between 42 and 88';
	}
	return $attrs;
}, 10, 2 );

It would appear the checkbox does not accept data-parsley-error-message as an attribute. Even with this filter it's still rendering parsley-required.

It also appears substituting $attrs[ 'parsley-required' ] doesn't help.

Hello, is there list of attrs which can be set using filter caldera_forms_field_attributes. Also which source file govern just for reference?