Dear Amit,
Purpose
You use this component if you wish to give notification of requirements of materials and/or external services and keep track of such requirements.
Requisitions can be created either directly or indirectly.
"Directly" means that someone from the requesting department enters a purchase requisition manually. The person creating the requisition determines what and how much to order, and the delivery date.
"Indirectly" means that the purchase requisition is initiated via another SAP component.
The creation indicator in the requisition shows whether the requisition was created directly or indirectly. It is displayed in analyses of requisitions and in the statistical data of a requisition item (see Analyses of Purchase Requisitions).
Purchase requisitions can be subject to a release (clearance, or approval) procedure. For further information on this topic, refer to the section Release Procedure.
Integration
Requisitions can be created indirectly in the following ways:
Via materials planning and control
The component Consumption-Based Planning suggests materials that need to be ordered on the basis of past consumption or usage figures and existing stock levels. The order quantity and the delivery date are determined automatically.
For further information on this topic, please refer to the MM Consumption-Based Planning documentation.
Materials planning and control can stipulate that a purchase requisition is to be resubmitted to the purchasing department if it has not been processed after a predefined period of time.
Via networks (from the R/3 component PS Project System)
Requisitions are generated automatically from networks if:
A material component with non-stock material or an external service component has been assigned to an operation and
The indicator allowing automatic generation of requisitions immediately the network is saved has been set in the network.
In this way, requisitions can be forwarded to Purchasing early in the planning phase.
If the indicator has not been set, the system passes the data on to materials planning and control when the network is released. The latter component then creates the requisition.
For more information, refer to the documentation PS Project system (section Material).
Via maintenance orders (from the R/3 components PM Plant Maintenance and Service Management)
Requisitions are generated automatically from maintenance orders if:
A material component with non-stock material has been assigned to an operation, or
An operation with the control key for external services has been created.
For further information, refer to the section Planning of an Order in the PM Maintenance Orders documentation.
Via production orders (from the component PP Production Planning and Control).
Requisitions are generated automatically from production orders if:
They contain an external processing operation (e.g. subcontracting work). A precondition is that the control key for the operation allows or prescribes external processing.
They contain non-stock components
For further information, refer to the section External Procurement/External Processing in the PP Production Orders documentation.
Texts from externally created requisitions (PS, PM) are adopted in the item text of the purchase requisition in Purchasing.
regards........ Sri
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