SAP Message WRF_STR020 - "Fixed Item Quantity" and rounding with quantity optimiz. not possible

Diagnosis
The rounding indicator for the current item is Quantity Optimization
, and Fixed Item Quantity was selected as a parameter.
You cannot select this combination, however, because the outboundquantity of the item may not be reached during quantity optimization dueto the rounding rules.

Procedure
Either remove the Fixed Item Quantity flag to execute theallocation strategy or cancel the allocation strategy, change therounding indicator in the item details, and execute the allocationstrategy again.