formcierge_unknown_merge_tag
Filter

Since v1.0.0

Provide a fallback value for merge tags that were not resolved by any registered handler.

Parameters
$value string The current (unresolved) value.
$tag string The merge tag string.
Defined in
includes/Core/MergeTagRegistry.php
add_filter( 'formcierge_unknown_merge_tag', function ( $value, $tag ) {
    return '';
}, 10, 2 );