SAP NetWeaver AS ABAP Release 740, ©Copyright 2014 SAP AG. All rights reserved.
ABAP Keyword Documentation → ABAP − Release-Specific Changes → Changes in Release 4.6A →
New Data Types STRING and XSTRING for Release 4.6A
In Release 4.6A, the two new types STRING for character strings and
XSTRING for byte strings are now available in addition to the elementary data types C and X.