Advanced Business Application Programming.ABAP is SAP's
fourth generation language. All of R/3's applications and
even parts of its basic system are developed in ABAP. ABAP
is used for customization and modification of SAP applications.
Pre-requisites to learn ABAP/4...?
How to get training in ABAP/4...?
How to get Certified in ABAP/4...?
ABAP System fields (Structure SYST)
ABAP Sample Report
ABAP/4 information and SAP technical documentation. A lot
of useful reports, interesting samples and free souce code.
and Tips on Configuration and Abap/4 Modules
are Material Management, Production Planning, Sales/Distribution,
Financial, Controlling and Basis Components.