If the error response is type json:
oModel.callFunction("/getData", {
method: "GET",
urlParameters: {
ID: myID,
},
success: oData => {
},
error: oError => MessageBox.error(JSON.parse(oError.responseText).error.message.value)
});
If the error response is coming from a Gateway and has an XML body (link):
MessageBox.error(jQuery.parseXML(oError.response.body).querySelector("message").textContent)
https://experience.sap.com/fiori-design-web/message-box/
https://sapui5.hana.ondemand.com/#/entity/sap.m.MessageBox
https://sapui5.hana.ondemand.com/#/api/sap.m.MessageBox
onRemoveItem: function (oEvent) {
const sPath = oEvent.getSource().getParent().getBindingContext().getPath()
const oModel = this.getView().getModel()
MessageBox.confirm(
this.getModel("i18n").getProperty("MessageBoxText"),
{
actions: [MessageBox.Action.YES, MessageBox.Action.NO],
emphasizedAction: MessageBox.Action.YES,
onClose: (sAnswer) => {
if (sAnswer === MessageBox.Action.YES) oModel.remove(sPath)
}
}
)
},