Release w. Classification (PReqs./Ext. Pur. Docs.) 
Release w. Classification (PReqs./Ext. Pur. Docs.)
Use
The aim of this procedure is to replace manual written authorization procedures using signatures by an electronic one, while maintaining the dual control principle.
The person responsible processes the requisition or other purchasing document in the system, thereby marking it with an "electronic signature" which can give the document legal force.
This release procedure can be used to approve requisitions and the external purchasing documents RFQ, PO, contract, scheduling agreement, and service entry sheet.
Purchase requisitions are released either at item level or in total. There is no provision for item-wise release (i.e. partial approval) in the case of the external purchasing documents. The latter can only be released in their entirety.
If you set up the release procedure with classification for purchase requisitions, the procedure without classification is deactivated.
Prerequisites
The release procedure with classification must have been set up in Customizing for Purchasing. In addition, a class with characteristics must have been created for each document (requisition, purchase order, etc.).
If you wish to set up both the overall release procedure and the item-wise procedure for requisitions, you must create one class for each procedure.
How to do this is outlined in the Implementation Guide (IMG) for Purchasing in Define Release Procedure for the relevant documents and in Set up Release Procedure with Classification for purchase requisitions. Detailed information on classification is available in the SAP Library in the Cross-Application Components documentation under Classification System, sections
CA - Characteristics and
CA – The Classification System.
This procedure offers a wide range of possible combinations of release criteria. Should you nevertheless have other requirements, use the enhancement provided by SAP.
See also:
Operation of a Release Procedure with Classification Changes After the Start of the Release Procedure Release with Link to Workflow