Delivery Creation - Negative cumulated ATP quantities

Dear experts,

I would want to share with you the following case to see if somebody has encountered the same issue:

For a specific material, the ATP Cumulated quantity has gone negative (due to unexpected goods movement).

In the customizing settings for ATP Group, I have set Cumulation on confirmed qty. In this situation, I execute in ECC transaction VL01N in order to manually create a delivery for SO 2570717 and the system will still allow it.

What I would expect is the system to block delivery creation in this case.

Is anybody familiar on the settings I may have missed in order to block delivery creation in case of negative cumulated ATP quantities?

Thanks in advance

Salvador