System error: current value assgnmt header not identical to read header

What causes this issue?

The value assignment header you want to save is not identical to the
header the system read from the database. This means that data in the
dialog is inconsistent.

System Response

The system is unable to save the data you entered.

How to fix this error?

Exit the transaction and repeat the steps that led up to the error. If
the error continues to occur, notify your system administrator.

Error message extract from SAP system. Copyright SAP SE.