Hello
It looks like this issue is related to the batch determination of the components.
Check the following on your system:
1. On the customizing transaction OSP2, check if you have already maintained the Stock determation rule and Batch search procedure for the REM profile, they are necessary for stock determination and batch determination. The REM profile is assigned in the material master of the header material.
2. Make sure that the automatic batch determination is activated in the material master of the componet. E.g. the field 'Batch entry' in MRP 2 view.
BR
Caetano