SAP- Material Management (MM) Notes?

Module Functions:
(MM) Materials Management – the module where (finished goods, raw materials and consumables) are managed for both quantity, price, month end inventory cutoffs and balance. Materials Management is inventory management, purchasing, invoice verification, warehouse valuation, Material master and materials planning.
Organizational Elements (Structures) – Materials Management
1. Company Code
2. Plant
3. Storage Location
4. Material / Product Grouping

Organizational Elements (Structures) – Procurement
1. Company Code: Represents an independent accounting unit with Balance Sheets and P&L Statements
2. Plant:An organizational element within a company. A plant produces goods and/or services. A plant can be a manufacturing for a distribution facility.
3. Storage Location:Unit that allow the differentiation of material stocks within a plant
4. Purchasing Organization:Unit structured to negotiate the general conditions of purchase for one or more plants or companies. Pricing conditions are set at this level
5. Purchasing Group key for a buyer or buyer group responsible for certain purchasing activities. Note: this element cannot be assigned to a purchasing organization.

Documents and Transactions
1. Purchase Requisitions
2. Purchase Orders
3. Goods Receipts Postings
4. Vendor invoice Posting
5. Other

Procurement Master Data
1. Material Master:Contains and defines all data to manage materials. Used as a source of purchasing information and inventory valuation.
2. Vendor Master:General, Accounting and Purchasing data necessary for processing business transactions and corresponding with vendors