81. What are user exits? What is involved in writing them? What precautions are needed? 
Ans. User Exits are used for enhancement of SAP Objects. Point in an SAP program where a customer's own program can be called.

82. What are RFCs? How do you write RFCs on SAP side? 
Ans. Remote Function Call. RFCs enable you to call and execute predefined functions in a remote system - or even in the same system.RFCs manage the communication process, parameter transfer and error handling.




83. What are the general naming conventions of ABAP programs?
 Ans.Starting with Z or Y

84. How do you find if a logical database exists for your program requirements? 
Ans. 



85. How do you find the tables to report from when the user just tell you the transaction he uses? And all the underlying data is from SAP structures? 
Ans.

 

86. How do you find the menu path for a given transaction in SAP? 
Ans.   From the main R/3 menu choose:
	Tools -->  Administration  ---> Data Retention Tool

87. What are the different modules of SAP? 
Ans. 



88. What is IMG in SAP? 
Ans. 



89. How do you get help in ABAP?    
Ans. Place the cursor on the filed & press F1.

90. What are different ABAP editors? What are the differences? 
Ans.