Incorrect entries are very common when you enter loads of data into the system and this happens with everyone. Microsoft knows this and hence they provided some useful tool in the form "Revert". There is an option in D365 where you can reverse the entered data (Create/Update) to a record.
Designate a field to be required for data entry. If no value has been entered in this field, it will appear with a red border and an asterisk to indicate this state.