Dynamics Community Forum Thread Details

How to remove or delete regarding lookup using webapi javascript?

Hello,

I want to delete the value of "Regarding Lookup" using webapi javascript while updating Task.

var stringJSONTask = {};

objAddTask["subject"] = "test";
objAddTask["regardingobjectid_contact@odata.bind"] = "/contacts(" + null + ")";

var stringJSONTask = JSON.stringify(objAddTask);

var oDataSelect = "abc.crm.dynamics.com/.../tasks("+ taskId +")";
$.ajax({
	type: "PATCH",
	contentType: "application/json; charset=utf-8",
	datatype: "json",
	url: oDataSelect,
	data: stringJSONTask,
	async: true,
	beforeSend: function (XmlHttpRequest) {
		XmlHttpRequest.setRequestHeader("Accept", "application/json");
		XmlHttpRequest.setRequestHeader("Content-Type", "application/json; charset=utf-8");
		XmlHttpRequest.setRequestHeader("Prefer", "odata.include-annotations=*");
		XmlHttpRequest.setRequestHeader("OData-MaxVersion", "4.0");
		XmlHttpRequest.setRequestHeader("OData-Version", "4.0");
	},
	success: function (data, textStatus, XmlHttpRequest) {
	  alert("updated");
	},
	error: function (xmlHttpRequest, textStatus, errorThrown) {
		alert(xmlHttpRequest.responseJSON.error.message);
	}
});

Please suggest me how to delete regarding lookup field value.

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