Can you describe a bit more your need/idea? You want to hold minimum/reserve in stock?

Hi, when using MRP calculation you can manage a safety stock so the reordering process will ensure the safety stock remain in stock at all time. But this does not prevent to issue the stock to face an exceptional demand. You can use the reordering point to manage minimum stock as well.

If you want to prevent the stock issue, then you use the customer allocations (FUNPBCALL function) to create a global allocation that will prevent the quantity to be used until deletion of the allocation.

That is correct. For example, if stock X gets down to 50 Available Stock the system would essentially consider the sku as zero when allocating and creating sales orders.

It all depends on solution how you want to manage it - like Julien suggested (can be used also ROP replenishment).

Other workarounds:

- use of two types of location (sage stock, daily use), product automatically can be taken from daily use location and only manual from the safe stock location.

- change quality status of the product (A1 - for sale, A2 - for safe stock), again same idea but products with status A2 will never be sold until someone changes its status to A1. 

- allocate safe stock - create order with dummy client or better internal client, and reserve safe stock products to it. As long products will be allocated, it will not be automatically picked up for other sales.

HEre is one more option:  You can also use customer reservations if the stock is for a specific customer or you can create a dummy customer for this process.