Participant Handbook. — SAP AG, 2013. — 638 p.
Sources of Supply and Conditions.
Source Determination.
Optimized Purchasing.
Selected Additional Topics.
Specific Procurement Processes.
Document Release Procedure.
Invoice Entry.
Variances and Invoice Blocks.
Subsequent Debit/Credit, Delivery Costs, and Credit Memos.
GR/IR Account Maintenance.