Get Status Reasons (statuscode) for a specific status (Statecode) from metaData
Following is sample code for getting statuses for an entity from metadata function getStatusAttributeMetadata(entityName) { var data = null; var webApiQuery = Xrm.Page.context.getClientUrl() + "/api/data/v8.2/EntityDefinitions(LogicalName='" + entityName + "')/Attributes/Microsoft.Dynamics.CRM.StatusAttributeMetadata?$expand=OptionSet"; var req = new XMLHttpRequest(); req.open('GET', webApiQuery, false); req.setRequestHeader("Accept", "application/json"); req.setRequestHeader("OData-MaxVersion", "4.0"); req.setRequestHeader("OData-Version", "4.0"); req.send(); if (req.readyState == 4 /* complete */) { if (req.status == 200) { var results = JSON.parse(req.response); data = results.value[0]; } else { var error = JSON.parse(req.response).error; console.log(error.message); ...