Processing with Service Specifications 
Purpose
You can assign tasks to external companies based on service specifications. Refer to
Standard Service Specifications. In the case of long-lasting business relationships with particular vendors, it is advisable to create service specifications in contracts. Contracts are agreements about validity periods, acceptance of delivery (quantity or value) and conditions for providing the service. The individual lines in the service specifications do not have to be entered manually, but can be copied from the service master or existing service specifications.
If the expense required for an individual purchase order of services cannot be justified, or if the purchasing department can be credited owing to the frequency of tasks to be processed externally, you can also use a framework order, in which several purchase order operations are combined for a longer period of time, instead of the individual purchase order. Framework orders are contracts with legally recoverable commitments.
For more information, see
Configurable Service Specifications.Prerequisites
You mark the operations for orders to be processed externally, which you want to process with service specifications, using a corresponding control key. In the standard system, this control key is PM03.
Process Flow
See
Converting Maintenance Purchase Requisitions Directly into Entry Sheets.The purchasing department leaves out all phases of the source determination and purchase order. The framework order can have a validity period over a longer period and can therefore be used more than once, notably always when services have been requested from the vendor, for whom the framework order was created.
The purchase requisitions generated are linked with the framework order.
See
Processes for Service Procurement.