Arvind's CRM Blog

Execute Workflow using Web API in Dynamics 365

Sharing sample code to call workflow using Web API from JavaScript.
First, we will create a normal workflow which works on demand and a create task with predefined subject and description and activate the workflow.

Copy the workflow Id and save it to use in JavaScript function.Call below JavaScript function from ribbon button from Lead entity.

function CallWorkflow() {
var workflowId = “71A6BC35-16D8-4447-8ADE-F040CDAE9524″;
var clientURL = Xrm.Page.context.getClientUrl();
var leadId = Xrm.Page.data.entity.getId().replace(‘{‘, ”).replace(‘}’, ”);
var data = {
“EntityId”: leadId
};
var req = new XMLHttpRequest();
req.open(“POST”, clientURL + “/api/data/v8.2/workflows(“+workflowId+”)/Microsoft.Dynamics.CRM.ExecuteWorkflow”, true);
req.setRequestHeader(“Accept”, “application/json”);
req.setRequestHeader(“Content-Type”, “application/json; charset=utf-8”);
req.setRequestHeader(“OData-MaxVersion”, “4.0”);
req.setRequestHeader(“OData-Version”, “4.0”);
req.onreadystatechange = function () {
if (this.readyState == 4 /* complete */) {
req.onreadystatechange = null;
if (this.status == 200) {
var data = JSON.parse(this.response);
} else {
var error = JSON.parse(this.response).error;
alert(error.message);
}
}
};
req.send(JSON.stringify(data));
}
For more details, please refer below URL
http://www.inogic.com/blog/2016/11/execute-workflow-using-web-api-in-dynamics-365-2/
hope this helps.