SAP LITERAL documentation, setup help and example usage

ARTICLE

Literals
Besides the named data objects which can be addressed by their names in the ABAP program (this includes the text symbols) and the
anonymous data objects created by the CREATE DATA statement, there are literals which are defined in the source code of a program by specifying a string representing a value. Possible literals are:

Numeric literals

Character literals

The literaloperator can be used to associated multiple literals of the same type with each other.
ABAP_PGL Using Literals