Cancel 101 movement with Inspection lot of closed financial period

Hi experts,

we are having the following problem.

We have a 101 movement with creation of Inspection lot, which was done in a finance period which is already closed.

Now I have to cancel this movement, but I get the error M7021 with VOR, which means that I am not allowed to cancel it, because of the period is already closed.

But we also can not open the period.

Which possibilities do I have?

Maybe MI10 movement?

Kind regards