Title: W3 Validation – Bad Value Last modified: August 30, 2016 --- # W3 Validation – Bad Value * Resolved [harvoolio](https://wordpress.org/support/users/harvoolio/) * (@harvoolio) * [10 years, 11 months ago](https://wordpress.org/support/topic/w3-validation-bad-value/) * When I run my code through the validation I am getting the below error for each accordion. Thanks. * Error: Bad value MBA Resources for attribute id on element h3: An ID must not contain whitespace. From line 144, column 1; to line 144, column 140 tablist” >↩

MBA Re Syntax of id: An ID consists of at least one character but must not contain any whitespace. * [https://wordpress.org/plugins/accordion-shortcodes/](https://wordpress.org/plugins/accordion-shortcodes/) Viewing 1 replies (of 1 total) * Plugin Author [philbuchanan](https://wordpress.org/support/users/philbuchanan/) * (@philbuchanan) * [10 years, 11 months ago](https://wordpress.org/support/topic/w3-validation-bad-value/#post-6361575) * Your IDs cannot contain whitespace (spaces). Right now your ID is set to `MBA Resources`. Try setting it to something like `mba-resources`. Viewing 1 replies (of 1 total) The topic ‘W3 Validation – Bad Value’ is closed to new replies. * ![](https://s.w.org/plugins/geopattern-icon/accordion-shortcodes.svg) * [Accordion Shortcodes](https://wordpress.org/plugins/accordion-shortcodes/) * [Frequently Asked Questions](https://wordpress.org/plugins/accordion-shortcodes/#faq) * [Support Threads](https://wordpress.org/support/plugin/accordion-shortcodes/) * [Active Topics](https://wordpress.org/support/plugin/accordion-shortcodes/active/) * [Unresolved Topics](https://wordpress.org/support/plugin/accordion-shortcodes/unresolved/) * [Reviews](https://wordpress.org/support/plugin/accordion-shortcodes/reviews/) * 1 reply * 2 participants * Last reply from: [philbuchanan](https://wordpress.org/support/users/philbuchanan/) * Last activity: [10 years, 11 months ago](https://wordpress.org/support/topic/w3-validation-bad-value/#post-6361575) * Status: resolved