Debi,
1. After user enters the material and delivery date (which copied from header delivery date or manually entered by user), while creating sales order, first Availability Check happens. The result of this check is :- 75 pieces of this material can be confirmed on 1st Jan. So one schedule line with 75 pieces on 1st Jan is created. Is my understanding is correct ?
Availability check is optional. However, assuming you have configured the system to use availability check, and assuming you have not implemented confirmation at lead time, then this statement is true.
2. Still we have a open demand for another 25 pieces. Now TOR steps in. This transfers the requirement to MRP (based on the customization). The result is :- 25 pieces of the stock will be confirmed on 15th Jan (due to Production Order / Purchase requisition). Now the 2nd schedule line with 25 pieces on 15th Jan is created. Am I right?
Not really; transfer of requirements is independent of Availability check. You can have transfer of requirements without using availability check. Basically, transfer of requirements happens in order to support planning. Availability check (which is not part of planning) also makes use of these transferred requirements.
When the sales order is created, and TOR is configured, requirements for the entire item are transferred to the Requirements table (for sales docs the table is VBBE); even if nothing is the sales order is confirmed. Thus, planning is able to respond to the order, whether or not it is confirmed. In addition, within this table, the system records whether the requirements are 'confirmed' or are 'not confirmed'.
3. Can you please tell me :- what is "Order confirmation" in this regards. I mean how anyone can differentiate between normal Sales Order and Confirmed Sales Order. Because as per my understanding, all sales order becomes "Confirmed" after Material Availability Check (MAC) and Transfer of Requirements (TOR).
When you view the schedule line in VA02/VA03, you can see a field called 'confirmed quantity'.
No; not all sales order items are confirmed. They can be fully confirmed (confirmed qty = item qty), they can be partially confirmed (confirmed qty < item qty), or they can be unconfirmed (confirmed qty = 0).
Sales orders can be confirmed during SO creation, SO change, and also using V_V2 (rescheduling). Planning, however, still sees the entire requirement quantity regardless.
Best Regards,
DB49