In sap there is specific transaction flow for a particular Mfg. Process.it all depends upon the req. of client and process.

Here is the basic flow of transactions which is req. for creating master data, planning and order processing...

The Made TO Order Cycle:

The sale department passes on the Made to order-Sales Order to the Material department so that material requirement is analyzed. This is done in SAP by carrying on an MRP Run for all the levels of the product BOM. This MRP Run would create Planned Orders for the shortages. Here the planned orders for fert sub assemblies, Components etc, are created. This planned orders for materials produced in house are converted in to Production order and planned orders for materials 
procured from outside are converted in to Purchase order. The creation of Production order through the planned orders will convert all the dependant requirements in to dependant reservations.

The dates of production or purchase are decided through the total replenishment time mentioned in the material master, If it is, in-house production, then the Route times precede over the total replenishment time entered in the material master. And the availability of all the components is ruled by the availability checking rules and by availability checking scopes. Thus whenever the system declares a product to be ready or available by a date it implies that the system has checked the availability of the material with respect to the Ware house stock, in coming stock   (Receipts) and all other planned orders already existing for the product or material. 

In the Made to order production, sales order produced for Fert and Sub assemblies are converted in to production order during MRP run. The production orders created have a specific quantity, specific Basic start date and a specific Basic Finish Date, a set of operations and a set of component attached from the BOM. In course of production the quantities produced in the operation for an order should be confirmed so that the current status of work is available in real time situation. The components required for production are issued to the production order through goods issue by a movement type 261 and the issue is always made to the reservations or to the order, thereby clearing the reservations. Issues of unplanned components are made as new items issue and not as order issue. The quantities, for an order which are produced completely are the put in to stock i.e. a Goods Receipt is done. 

Thus the made to order cycle starts with the sales orders and converting them to Production Orders through MRP Run and there off confirming produced quantities for an order and finally putting the order in to stock. 

The Cycle of Made to order: Steps: MTO Scenario

1. Material Creation (Made To order Material with major changes of: Item Category: 0004-make to order/assem.,or 0001-make to order)
2. Route Creation
3. Creation of BOM
4. Sales order
5. Production order Scheduling, Costing, Release and Save
6. Production order Quantity confirmations for operations, Parallel task of material issue to order or to reservations (261) 
7. Fully Produced Production Quantities will be put into stock (GR)
8. Delivery against sales order
9. Invoicing.                                                           *-- Karthikeyan Gnanavel

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