Comparison of Exit, Back and Cancel (SAP Library - BC

Comparison of Exit, Back and Cancel

To clarify the differences between the three basic navigation functions Back, Exit or End <application> and Cancel, the three functions are compared in the following.

Graphical Comparison

The following graphics show the technical procedure for the three navigation functions; in particular, they show when error checks and confirmation prompts occur.

A comparison of the three navigation functions reveals that with Back and Exit or End <application> the error check is performed at different events: With Back, the check is performed at the beginning of the processing, whereas with Exit or End <application> it is performed at the end. With Cancel, by contrast, no check is performed.

Table Comparison

Criterion	Back	Exit	Cancel
Effect	exits object	exits task	terminates processing component
Target	returns to previous level	Screen calling the task	if possible a close screen
*Save option)**	yes	yes	no

Checks	yes	yes	no
Save option	yes	yes	no

Checks	yes	yes	no
Pull-down menu	Goto	<Object>	Edit
Function key	F3	F15	F12

*) with dialog box

Dialog Box

Criterion	Back	Exit	Cancel
Title (Example)	Back	Exit G/L document	Cancel G/L document
Diagnosis text (Example)	---	---	Unsaved data will be lost.
Text (Example)	Do you want to post the held document?	Do you want to post the held document?	Unsaved data will be lost. --- blank line --- Do you want to cancel the editing?
Pushbutton (Default)	Yes, No, Cancel	Yes, No, Cancel	Yes, No
Function module	POPUP_TO_ CONFIRM_ STEP, POPUP_TO_ CONFIRM_ WITH_VALUE	POPUP_TO_ CONFIRM_ STEP, POPUP_TO_ CONFIRM_ WITH_VALUE	POP_UP_TO_ CONFIRM_ LOSS_ OF_DATA

For screen examples please refer to Prompts in Dialog Boxes.