Title: [Plugin: Advanced Custom Fields] Input Method Error
Last modified: August 20, 2016

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# [Plugin: Advanced Custom Fields] Input Method Error

 *  Resolved [veteran](https://wordpress.org/support/users/jin-young/)
 * (@jin-young)
 * [13 years, 10 months ago](https://wordpress.org/support/topic/plugin-advanced-custom-fields-input-method-error/)
 * **Case:**
    Field type – taxonomy -> Input Method – Hierarchical Checkboxes
 * following
 * `PHP Fatal error: Undefined class constant 'FIELD_NAME' in /~/wp-content/plugins/
   advanced-custom-fields-taxonomy-field-add-on/taxonomy-field.php on line 513`
 * [http://wordpress.org/extend/plugins/advanced-custom-fields/](http://wordpress.org/extend/plugins/advanced-custom-fields/)

Viewing 1 replies (of 1 total)

 *  Plugin Contributor [Elliot Condon](https://wordpress.org/support/users/elliotcondon/)
 * (@elliotcondon)
 * [13 years, 10 months ago](https://wordpress.org/support/topic/plugin-advanced-custom-fields-input-method-error/#post-2922793)
 * Please contact the author of this field to let them know of the error. Thanks

Viewing 1 replies (of 1 total)

The topic ‘[Plugin: Advanced Custom Fields] Input Method Error’ is closed to new
replies.

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## Tags

 * [advanced custom field](https://wordpress.org/support/topic-tag/advanced-custom-field/)
 * [taxonomy field](https://wordpress.org/support/topic-tag/taxonomy-field/)

 * 1 reply
 * 2 participants
 * Last reply from: [Elliot Condon](https://wordpress.org/support/users/elliotcondon/)
 * Last activity: [13 years, 10 months ago](https://wordpress.org/support/topic/plugin-advanced-custom-fields-input-method-error/#post-2922793)
 * Status: resolved