<h2>Create or edit a CMDB Health staleness rule</h2><br/><div style="overflow-x:auto"> <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en"><head><meta content="text/html; charset=UTF-8" /><meta name="copyright" content="(C) Copyright 2024" /><meta name="DC.rights.owner" content="(C) Copyright 2024" /><meta name="generator" content="DITA-OT" /><meta name="DC.type" content="task" /><meta name="DC.title" content="Create or edit a CMDB Health staleness rule" /><meta name="abstract" content="If the staleness metric is in effect, then staleness rules are used to determine the percentage of stale CIs in the CMDB. This sum is then aggregated into the correctness KPI, and weighs into the overall CMDB health calculation." /><meta name="description" content="If the staleness metric is in effect, then staleness rules are used to determine the percentage of stale CIs in the CMDB. This sum is then aggregated into the correctness KPI, and weighs into the overall CMDB health calculation." /><meta name="DC.relation" scheme="URI" content="https://youtu.be/CvMRT3NExIo" /><meta name="DC.creator" content="Vaughn Romero" /><meta name="DC.creator" content="Phil Salzman" /><meta name="DC.creator" content="ServiceNow" /><meta name="DC.date.created" content="2023-08-03" /><meta name="DC.date.modified" content="2023-08-03" /><meta name="DC.format" content="XHTML" /><meta name="DC.identifier" content="t_CreateCMDBHealthStaleRule" /><link rel="stylesheet" type="text/css" href="../../../CSS/commonltr.css" /><title>Create or edit a CMDB Health staleness rule</title></head><body id="t_CreateCMDBHealthStaleRule"> <h1 class="title topictitle1" id="ariaid-title1">Create or edit a CMDB Health staleness rule</h1> <div class="body taskbody"><p class="shortdesc">If the staleness metric is in effect, then <span class="ph" id="ph_StaleRulesShortDesc1">staleness rules are used to determine the percentage of stale CIs in the CMDB.</span> This sum is then aggregated into the correctness KPI, and weighs into the overall CMDB health calculation.</p> <div class="section prereq p" id="t_CreateCMDBHealthStaleRule__prereq_stalerule"> <p class="p">Role required: itil has read access, itil_admin (on top of itil) has full access.</p> </div> <div class="section context" id="t_CreateCMDBHealthStaleRule__context_ngm_l3n_w2b"> <p class="p">The Discovery setting of certain types of CIs as stale takes precedence over a CMDB Health staleness rule defined for the CI. For more information about Discovery marking CIs as stale, see <a class="xref" href="../product/discovery/concept/c_DiscoveryForVMwareVCenter.dita/c_DiscoveryForVMwareVCenter.html" target="_blank" rel="noopener noreferrer">Discovery for VMware vCenter</a>.</p> <p class="p"><span class="ph" id="t_CreateCMDBHealthStaleRule__ph_StaleRulesShortDesc2">Staleness rules are defined per class.</span> If a rule is not defined for a class, then the parent's rule applies for that class.</p> </div> <ol class="ol steps" id="t_CreateCMDBHealthStaleRule__steps_f4k_yjw_m5"><li class="li step stepexpand"> <span class="ph cmd">Navigate to <span class="ph menucascade"><span class="ph uicontrol">All</span> > <span class="ph uicontrol">Configuration</span> > <span class="ph uicontrol">CI Class Manager</span></span>.</span> </li><li class="li step stepexpand"> <span class="ph cmd">Select <span class="ph uicontrol">Hierarchy</span> to show the CI Classes list and then select the class for which to create a staleness rule.</span> </li><li class="li step stepexpand"> <span class="ph cmd">In the class navigation bar, expand <span class="ph uicontrol">Health</span>, select <span class="ph uicontrol">Correctness</span>, and then select the Staleness Rule tab.</span> </li><li class="li step stepexpand" id="t_CreateCMDBHealthStaleRule__step_step4CreateHealthStaleRule"> <span class="ph cmd">Select a staleness rule to edit or select <span class="ph uicontrol">New</span>, and then fill out the Staleness Rule form.</span> <div class="itemgroup info"> <div class="tablenoborder"><table cellpadding="4" cellspacing="0" summary="" id="t_CreateCMDBHealthStaleRule__table_ncm_kfw_m5" class="table" frame="border" border="1" rules="all"><colgroup><col style="width:50%" /><col style="width:50%" /></colgroup><thead class="thead" style="text-align:left;"><tr class="row"><th class="entry nocellnorowborder" style="vertical-align:top;" id="d169206e124">Field</th><th class="entry cell-norowborder" style="vertical-align:top;" id="d169206e127">Description</th></tr></thead><tbody class="tbody"><tr class="row"><td class="entry nocellnorowborder" style="vertical-align:top;" headers="d169206e124 ">Applies to</td><td class="entry cell-norowborder" style="vertical-align:top;" headers="d169206e127 ">The class for which the rule applies.</td></tr><tr class="row"><td class="entry row-nocellborder" style="vertical-align:top;" headers="d169206e124 ">Effective Duration</td><td class="entry cellrowborder" style="vertical-align:top;" headers="d169206e127 ">The time period that is used for the staleness test.<p class="p">If the CI was not updated (based on Updated <span class="keyword parmname">sys_updated_on</span>) within the specified time period — the CI is determined to be stale.</p> <p class="p">If you enter a value with a prefix that is valid and a suffix that is not, such as 15 x — the valid portion of the value is used ('15'). If the entire value is invalid — the value is ignored and the previous valid value is used.</p> </td></tr></tbody></table> </div> </div> </li><li class="li step stepexpand" id="t_CreateCMDBHealthStaleRule__step_step5CreateHealthStaleRule"> <span class="ph cmd">Select <span class="ph uicontrol">Submit</span> or <span class="ph uicontrol">Update</span> to save the rule.</span> </li></ol> </div> <div class="related-links"> <div class="linklist relinfo"><strong>Related topics</strong><br /> <ul class="linklist"><li class="linklist"><a class="link" href="https://youtu.be/CvMRT3NExIo" target="_blank" rel="noopener noreferrer">CMDB Health Dashboard for Helsinki | Overview</a></li></ul></div> </div> </body></html></div>