You can directly assign a search help to a screen field. In this case, the search help is available only for the desired screen. If the same field is used on several screens, you must attach the search help to the referenced table field or structure field. (For more information, see Attaching to Table Fields .)
You can attach a search help directly to a screen in the following ways:
The Screen Painter for this screen appears in display mode.
In both cases, this assigns the first parameter of the search help to the screen field. The result is that only a value from the hit list can be returned to the screen template.
We do not recommend you attach search helps directly to screen fields.
You can assign search helps either statically or dynamically.
Enter the name of the search help.
Enter a colon (:) followed by the name of a (program) field. The content of the field is interpreted at runtime as the name of a search help.
If you specify a search help with several parameters, the first parameter of the search help is linked to the screen field. It is not (currently) possible to link further search help parameters to other screen fields. Instead, you can use the function in the ABAP Dictionary that allows you to link a search help to a field of a structure.
Reaction to the =- short notation
If you have specified a search help, entering =- at the beginning of a field has a special meaning. The screen reacts to any function code by calling the F4 help for the field.
You can cause the same reaction without a search help by just entering the equals (=) sign.