Solver? to determine sequencing in inventory management problem

Batch 1 quantity to 4000 or change 10000 to 9000 I was wondering why solver says "could not find a feasible solution".

You've changed the production from 5000 to 4000 but I assume the customer demand stays the same i.e. 32962.

So with only 4000 in production the only orders that can be filled is A, D, F, G and H this adds up to 2949

As you've now used batch1 completely as you can't use balance 4000-2949 to partly fill another order you only have batch2, batch3 and batch4 left i.e. 30000 units and your customer demand is B, C, E, I and J and the total of these orders are 30013 units so as you can see solver can't fulfill a demand like this.

But only changing one of the 10000 batches to 9000 and keeping 5000 batch unchanged will let solver find a solution.

Alf

Ps Thanks for feedback and rep