There are several reasons the Employer Payment Submission (EPS) filing is created and might not be required every month or at all. I'd be happy to share them with you and help you from there.
Here are some of the possible reasons:
No payments to employees have been made within the current or past pay period.
To show CIS suffered for a period of time (Year to Date amount).
To claim reimbursement for statutory payments (not including sick pay).
To claim the Employment Allowance, if entitled.
Since it isn't always required, one is not created each time you run payroll. You can consider sending it after you have completed all the payroll for the tax month, or by the 19th of the following month if HMRC has to give you credit for what you owe from the EPS. And please know that you should only submit one EPS for a tax period.
Also, if you want to submit it manually, you can download the Basic PAYE Tools from the HMRC website. For more guidance, feel free to check out these links: