Caution when deleting the rollup history - Read long text

What causes this issue?

If you delete the execution data of a rollup, this does not normally
have any effect on the fiscal year, unless you have executed the rollup
at least once during this year with 'Write line items', and have not yet
reversed this run.
In this case, the information needed for the rollup reversal will be
lost by deleting the data, that is, you can no longer reverse this
special rollup run.

System Response

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

How to fix this error?

Check whether any rollup runs to be reversed still exist for the fiscal
year to be deleted (Reverse rollup -> the system displays a list with
all the rollup runs which can be reversed).

Error message extract from SAP system. Copyright SAP SE.