Time dependency of table &1 cannot be deactivated

What causes this issue?

You have attempted to deactivate the time dependency of a database
table.

System Response

Time dependency may not be deactivated if time-dependent data has been
maintained.

How to fix this error?

You must first remove all records that have been maintained with time
dependence before you can deactivate the time dependence of the selected
database table.

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.