Retroactive accounting field is empty, but past data cannot be maintained

What causes this issue?

The field <DS:DE.EPAST>Maintenance in past permissible</> contains the
value "E", which means that maintenance in the past is not allowed. The
field <DS:DE.RUREC>Retroactive-accounting-relevant payroll</> is empty-
it is therefore possible to make a change at a desired point in time.

System Response

The entry is possible.

How to fix this error?

Check your entries.
If you want to flag the infotype as unchangeable in the payroll past,
set the retroactive accounting relevant payroll to "R".

Procedure for System Administrators

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Error message extract from SAP system. Copyright SAP SE.