Planned quantity &1 plant &2 outside of specified min/max value range

What causes this issue?

You specified minimum/maximum values in the selection screen, which
instructs the system to adjust the planned quantities for the recipients
that were calculated based on the allocation strategy to these values.
The system overwrote these values through subsequent calculations, for
example, because you set the <LS>Fixed Item Quantity</> flag.

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?

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.