Title: json error
Last modified: January 8, 2022

---

# json error

 *  Resolved [warcher88](https://wordpress.org/support/users/warcher88/)
 * (@warcher88)
 * [4 years, 5 months ago](https://wordpress.org/support/topic/json-error-40/)
 * Hello,
 * I have another plugin installed called Post My CF7 Form which converts contact
   form messages into custom post types (made with CPT UI), however it is receiving
   a JSON error when i try to connect custom fields from one of my custom post types.
   Apparently there is a duplicate value somewhere. It only happens when working
   with one particular custom post type.
 * Is there a way to do a JSON refresh? I have looked at the wp_terms table and 
   found a couple of duplicates in there which i deleted but the problem persists.
   I am out of ideas, could you offer any help?

Viewing 1 replies (of 1 total)

 *  Plugin Contributor [Michael Beckwith](https://wordpress.org/support/users/tw2113/)
 * (@tw2113)
 * The BenchPresser
 * [4 years, 5 months ago](https://wordpress.org/support/topic/json-error-40/#post-15230175)
 * Not really sure what to suggest here as it all sounds very external to what CPTUI
   covers at least. Sounds more like it’s on the “Post My CF7” plugin side and how
   it’s trying to create/update entries.
 * I do see that you started a forum thread with them already and have had some 
   debugging done there.
 * They’re still going to be the best bet here, as we only handle the registration
   of the post types and taxonomies for people, and the only place we have any JSON
   integration is with importing/exporting settings to other installs that have 
   CPTUI installed as well.

Viewing 1 replies (of 1 total)

The topic ‘json error’ is closed to new replies.

 * ![](https://ps.w.org/custom-post-type-ui/assets/icon-256x256.png?rev=2744389)
 * [Custom Post Type UI](https://wordpress.org/plugins/custom-post-type-ui/)
 * [Frequently Asked Questions](https://wordpress.org/plugins/custom-post-type-ui/#faq)
 * [Support Threads](https://wordpress.org/support/plugin/custom-post-type-ui/)
 * [Active Topics](https://wordpress.org/support/plugin/custom-post-type-ui/active/)
 * [Unresolved Topics](https://wordpress.org/support/plugin/custom-post-type-ui/unresolved/)
 * [Reviews](https://wordpress.org/support/plugin/custom-post-type-ui/reviews/)

 * 1 reply
 * 2 participants
 * Last reply from: [Michael Beckwith](https://wordpress.org/support/users/tw2113/)
 * Last activity: [4 years, 5 months ago](https://wordpress.org/support/topic/json-error-40/#post-15230175)
 * Status: resolved