Hello
The attached screenshot from transaction MD04 shows that this sales order is not MRP relevant.
Was this sales order created after you set the strategy 40 on the material master? Please try with a new sales order.
The MRP relevance of the sales order is defined by the requirement type/class customizing. Check the sales order requirement type on tab procurement of the sales order. Then, check the requirement class assigned to this requirement type on transaction OVZH. After that, check on the customizing transaction OVZG which value is set for the field "no mrp". This is where the sales order MRP relevance is defined.
The requirement type is derived from the planning strategy but you can assign manually a requirement type to the sales order item category on the customizin transaction OVZI.
Please observe that any customizing change will be only relevant for newly created orders.
See point 5 of document MD04: Problems with sales orders for details.
BR
Caetano