Financial object '&' does not yet exist; save not possible

What causes this issue?

You attempted to change finance object '&V1&'. However, no finance
object exists for the specified key for the original object ('&V2&',
internal number '&V3&', external number '&V4&').

System Response

The data can not be saved.

How to fix this error?

Enter an original object for which the finance object has already been
created.
Online transaction
Check the keys of the original transaction as entered on the initial
screen.
Data transfer
Check the data in the sender file, particularly the keys for
identifying the original transaction.

Error message extract from SAP system. Copyright SAP SE.