Title: Error while saving posts on subsite
Last modified: February 24, 2026

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# Error while saving posts on subsite

 *  Resolved [naturfreundeschweiz](https://wordpress.org/support/users/naturfreundeschweiz/)
 * (@naturfreundeschweiz)
 * [3 months, 1 week ago](https://wordpress.org/support/topic/error-while-saving-posts-on-subsite/)
 * We run a multisite setup and installed Powered Cache yesterday. Users on subsite
   got the following error message when trying to make a new post. This was on a
   custom post type but I did not test if it also happens on a normal post.
 * `The update failed. Unfortunately, you are not authorized to edit the custom 
   field powered_cache_disable_cache.`
 * If I look into the network tab I get the following answer:
 * `{"code":"rest_cannot_update","message":"Du bist leider nicht berechtigt, das
   individuelle Feld powered_cache_disable_cache zu bearbeiten.","data":{"key":"
   powered_cache_disable_lazyload","status":403},"additional_data":[{"key":"powered_cache_disable_cache","
   status":403}],"additional_errors":[{"code":"rest_cannot_update","message":"Du
   bist leider nicht berechtigt, das individuelle Feld powered_cache_disable_lazyload
   zu bearbeiten.","data":{"key":"powered_cache_disable_lazyload","status":403},"
   additional_data":[{"key":"powered_cache_disable_cache","status":403}]}]}`
 * With ChatGPT I managed to get it running with the following code but thats surley
   not ideal:
 * `add_filter('user_has_cap', function($allcaps, $caps, $args, $user) {
   if (defined('
   REST_REQUEST') && REST_REQUEST) { if (!empty($_SERVER['REQUEST_URI']) && strpos(
   $_SERVER['REQUEST_URI'], '/wp/v2/posts') !== false) { if (isset($allcaps['edit_posts'])&&
   $allcaps['edit_posts']) { $allcaps['manage_options'] = true; } }}return $allcaps;},
   999, 4);

Viewing 3 replies - 1 through 3 (of 3 total)

 *  Plugin Author [Mustafa Uysal](https://wordpress.org/support/users/m_uysl/)
 * (@m_uysl)
 * [3 months, 1 week ago](https://wordpress.org/support/topic/error-while-saving-posts-on-subsite/#post-18832507)
 * Hi [@naturfreundeschweiz](https://wordpress.org/support/users/naturfreundeschweiz/),
 * Thanks for the report.Did you activate Powered Cache network-wide, or only on
   a per-site basis?
 * > Users on subsite got the following error message when trying to make a new 
   > post. This was on a custom post type but I did not test if it also happens 
   > on a normal post.
 * Could you share the affected user’s role on that site?
 * At the moment, a user must have the `edit_others_posts` capability to modify 
   cache-related settings on a specific post, so this may be a capability-related
   issue. I’ve tested this on multisite with standard Administrator and Author roles
   and did not encounter the problem. Normally, users without the required capability
   should not see the Powered Cache section in the block editor at all.
 * Looking forward to your reply.
 *  Thread Starter [naturfreundeschweiz](https://wordpress.org/support/users/naturfreundeschweiz/)
 * (@naturfreundeschweiz)
 * [3 months, 1 week ago](https://wordpress.org/support/topic/error-while-saving-posts-on-subsite/#post-18833122)
 * Thank you for the fast answer! You are correct: It is a custom role made with
   the “Admin Menu Editor Pro” plugin. It does NOT have the `edit_others_posts` 
   capability so that seems to be the problem
 * It is correct though, that this role should not be able to edit posts from other
   users. I do not see a Powered Cache section with that role (which is good) but
   I do get the error message. Attached you see a screenshot of the capabilities
   of the role.
 * [https://nfsenioren.ch/wp-content/uploads/sites/68/2026/02/FireShot-Capture-004-Menu-Editor-Pro-Roles-‹-Naturfreunde-Senioren-Zuerich-–-WordPress_-nfsenioren.ch_-scaled.png](https://nfsenioren.ch/wp-content/uploads/sites/68/2026/02/FireShot-Capture-004-Menu-Editor-Pro-Roles-‹-Naturfreunde-Senioren-Zuerich-–-WordPress_-nfsenioren.ch_-scaled.png)
 *  Plugin Author [Mustafa Uysal](https://wordpress.org/support/users/m_uysl/)
 * (@m_uysl)
 * [3 months, 1 week ago](https://wordpress.org/support/topic/error-while-saving-posts-on-subsite/#post-18833395)
 * Hi [@naturfreundeschweiz](https://wordpress.org/support/users/naturfreundeschweiz/),
 * Thanks for confirming, that explains it.
 * I think the real issue here is not the failed capability check itself, but why
   the failed REST request ends up blocking the post update entirely.
 * For example, when creating new categories or tags, if a user does not have the
   required capability, that specific request fails — but the post update itself
   is not blocked. So in this case, something else may be interfering with how the
   failed API response is handled.
 * Since this is a custom role created via Admin Menu Editor Pro, it’s possible 
   another plugin is affecting the REST behavior or capability handling.
 * > Thank you for the fast answer! You are correct: It is a custom role made with
   > the “Admin Menu Editor Pro” plugin. It does NOT have the edit_others_posts 
   > capability so that seems to be the problem
 * Yes, that part is expected behavior — without edit_others_posts, the meta update
   should fail. However, it normally should not prevent the post from being saved.
 * For now, I’ll mark this as resolved from our side. If you continue to experience
   the issue or narrow it down further, feel free to reopen the thread and I’ll 
   be happy to take another look.

Viewing 3 replies - 1 through 3 (of 3 total)

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 * 3 replies
 * 2 participants
 * Last reply from: [Mustafa Uysal](https://wordpress.org/support/users/m_uysl/)
 * Last activity: [3 months, 1 week ago](https://wordpress.org/support/topic/error-while-saving-posts-on-subsite/#post-18833395)
 * Status: resolved