Check your scripts. It looks like you are setting a field value on save event which causes this message.
Also you can use the following script to refresh the form:
var currentRecordIdString = parent.Xrm.Page.data.entity.getId();
var currentRecordId = currentRecordIdString.replace("{", '').replace("}", '');
Xrm.Utility.openEntityForm("entitylogicalname", currentRecordId);
Sachith Chandrasiri