Description:

A declaration expression using the FIELD-SYMBOL operator declares a field symbol <fs>, which is assigned to a memory area at the current operand position.

• The declared field symbol <fs> is statically visible from the point of FIELD-SYMBOL(<fs>) and remains valid within the current context.
• This declaration occurs at compile time, even if the statement is never executed at runtime.
• The FIELD-SYMBOL declaration operator can be used in any valid declaration position.
• An inline-declared field symbol <fs> cannot be read from within the same statement where it is declared.

Syntax:

LOOP AT lt_vbap ASSIGNING FIELD-SYMBOL(<lfs_line>).
 		 "
ENDLOOP.

For structure:

ASSIGN COMPONENT 'VBELN' OF STRUCTURE ls_vbak TO FIELD-SYMBOL(<lfs_field>).
IF <lfs_field> IS ASSIGNED.
  WRITE: <lfs_field>.
ENDIF.

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Sangeeta Singh