I was trying to create an entity record using Xrm.WebApi.CreateRecord but I'm getting the following error.

"cannot find record to be updated"

please note that the field 'edm_donorid' exists in the form and the ID that I'm using to fill the fill also exists in the contacts.

var entity = {};
var type = result["_edm_donorid_value@Microsoft.Dynamics.CRM.associatednavigationproperty"];

if (type == "edm_DonorID_contact") {
    entity["edm_DonorID_contact@odata.bind"] = "/contacts(" + result["_edm_donorid_value"] + ")";
}
else if (type == "edm_DonorID_account") {
    entity["edm_DonorID_account@odata.bind"] = "/accounts(" + result["_edm_donorid_value"] + ")";
}

opener.Xrm.WebApi.createRecord("edm_bookreceiptdetail", entity)
    .then(function success(record) {
        console.log("record created with ID: " + record.id);
        // perform operations on record creation
    },
        function (error) {
            console.log(error.message);
            // handle error conditions
        }
    );