First step is to convert a planned order to production order. When you create a Production Order, type is defined in SAP PP system.
To start the production process, it is necessary to issue Production order. Till a production order is not released, execution of production process is not started.
Issuing goods is required for providing the goods to execute the Production order. Once goods are issues, document number can be updated in the system.
All the sub processes are executed in accordance with required operations to confirm the production as per Production order.
