There are 11 modules in SAP, usually referred to by a two-letter acronym. The BASIS system could also be considered a module, but is the heart of the SAP system and is not normally evident to users. All these modules need not be implemented in a company.
AM Asset Management – track, value, and depreciate assets, including
Purchase
Depreciation
Sale
CO Controlling – internal cost management accounting, including
Overhead cost
Product cost
Profitability analysis
FI Financial Accounting – normal accounting books, including
General ledger
Special purpose ledger
Accounts receivable and payable
HR Human Resources – People management, including
Payroll
Recruitment
Personnel development
MM Materials Management – Anything to do with goods, including
Inventory Management
Consumption-based planning
Purchasing
PM Plant Maintenance – Equipment maintenance record, including
Maintenance order management
Equipment inventory
Down time
PP Production Planning - Manages the production process, including
Production order execution
Material requirements planning
Capacity planning
PS project System – Standard tools for project management, including
Progress analysis
Time sheets
Costs and forecasts
QM Quality Management – Controls materials quality, including
Planning
Inspections
Certificates
SD Sales and Distribution – Controls the order lifestyle, including
Sales Promotion
Pricing
Billing
CA Cross Application – Enhances the individual modules, including
Workflow [WF]
Business information warehouse [BW]
Industry solutions [IS]