Can I create a starter notification after sending an RTI submission?
If you have already sent HMRC any information about an employee, sending a starter notification would cause a duplicate employment on HMRC's systems. The only time you should do this is if the employee has more than one job with you (e.g. they have left and rejoined). If an ex-employee has rejoined, please see the separate answer in the 'Features and General' section of our FAQ list.
If you have created an RTI submission but not yet sent it, you should discard the RTI submission before adding or changing any starter details.