The Materials Management Module (MM) of SAP is completely integrated with other modules such as (SD, FICO, PP, WM, PM).
Procurement in SAP MM comprises of following.
Determination of Requirements
Source Determination
Vendor Selection
Purchase Order Processing
Purchase Order Follow-up
Goods Receiving and Inventory Management
Invoice Verification
Determination of Requirements: This phase comprises of identification of Material Requirements. This can be based on the user or MRP proper/Demand based approach to inventory control. Purchase Requisitions can be created manually (ME51N) Release (ME54) or can be generated using the System.
Source Determination: This Phase comprises of identification of potential sources of supply. This can be based on past orders, and existing agreements.
Vendor Selection: This Phase comprises of comparison of quotations received from Vendors. The system can check different quotations received from vendors.
Purchase Order Processing: In this phase information is acquired from the Requisition and the Quotation. Purchase Orders can be generated by the system or they can be created manually (ME21N).
Goods Receiving and Inventory Management: The goods receipts number can be obtained by entering the Purchase Order number.
Always use Pretty Printer and Extended Program Check before releasing the code.
Do not leave unused code in the program. Comment the code thoroughly. Align the comments and the Code. Follow the SAP Standards and SAP Best Practices guidelines. It’s a good practice to take a dump of the code on your local drive.
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