Entity &1 to be deleted cannot be uniquely determined in the application

What causes this issue?

During the reimplementation of business transactions, the removal of
postdating, or the shifting of effective date, the system attempts to
find the object, such as a clause, limit, or deductible, that was
deleted in the original processing in the current application. The
object to be deleted can no longer exist, for example, in the following
circumstances:
The object was deleted during retroactive processing.
The creation of the object was skipped on account of the settings in the
scheduling dialog.
The validity of the object is no longer defined due to the shifting of
the effective date, for instance the end date of the object is before
the new effective date.
For the external scheduling of the business transaction, an invalid
object key was transferred for object &V1&.

System Response

The object could not be deleted in the current application. During the
reimplementation of business transactions, the removal of postdating, or
the shifting of effective date, the system interrupts the business
transactions and displays the scheduling dialog again.

How to fix this error?

The business transaction must be executed with user interaction or the
change is no longer necessary due to the circumstances described above.

Procedure for System Administrators

If the business transaction is to be scheduled externally, the
scheduling program must be analyzed.

Error message extract from SAP system. Copyright SAP SE.