If an Employer Payment Summary (EPS) has not been sent to HMRC and you wish to delete it, select 'RTI' on the menu bar:

1) Select the EPS submission from the listing on the left:
 

2) Click 'More > Delete' on the menu bar:
 

3) Click 'Yes' to confirm that you wish to delete the submission:

Please note: You can only delete an EPS (Employer Payment Summary) that you have created in the RTI section. It is not possible to delete an FPS (Full Payment Submission) that has been automatically created when finalising payslips.

To remove the FPS from the outstanding submissions, either 'Mark as sent and accepted by HMRC' or choose to "Exclude from 'Unsent Submissions' Count"