Mobile App Builder (MAB) — Unable to Delete Items from Navigation Tab in Mobile App Builder<!-- /*NS Branding Styles*/ --> .ns-kb-css-body-editor-container { p { font-size: 12pt; font-family: Lato; color: var(--now-color--text-primary, #000000); } span { font-size: 12pt; font-family: Lato; color: var(--now-color--text-primary, #000000); } h2 { font-size: 24pt; font-family: Lato; color: var(--now-color--text-primary, black); } h3 { font-size: 18pt; font-family: Lato; color: var(--now-color--text-primary, black); } h4 { font-size: 14pt; font-family: Lato; color: var(--now-color--text-primary, black); } a { font-size: 12pt; font-family: Lato; color: var(--now-color--link-primary, #00718F); } a:hover { font-size: 12pt; color: var(--now-color--link-primary, #024F69); } a:target { font-size: 12pt; color: var(--now-color--link-primary, #032D42); } a:visited { font-size: 12pt; color: var(--now-color--link-primary, #00718f); } ul { font-size: 12pt; font-family: Lato; } li { font-size: 12pt; font-family: Lato; } img { display: ; max-width: ; width: ; height: ; } } Issue usually presents in the following fashion: When attempting to remove an icon (e.g., 'My Assets') from the 'Icon Section Destination' of the 'My Items' tab in Mobile App Builder, clicking the minus icon and saving results in an internal MAB error: BadRequestError — unable to delete record from table sys_sg_navigation_section_m2m_destination due to an ACL Exception Delete Failed security constraint. The record can be deleted successfully from the backend directly, indicating the issue is isolated to the MAB UI. Upon review by our development team, it was determined that this is a known issue because either the destination record or the mapping record is in a different scope. We currently have an internal story to try to fix this issue in a later release. Right now this can only be resolved on the platform UI - for this you will want to go to the sys_sg_navigation_section_m2m_destination table, and delete the relationship record: https://<instance-name>.service-now.com/now/nav/ui/classic/params/target/sys_sg_navigation_section_m2m_destination_list.do Currently, there is no targeted release for the internal story to address this behaviour, and our suggestion is to continue using this workaround until the remediation is available for the MAB.