Function module to generate password

You should use the addition LOWER CASE to take care of the Lower Case characters. Please see the code given below.

REPORT ZEX_PASSWORD .

Parameter: p_char(100) LOWER CASE.

Data: d_password(8),
d_len type i.


d_len = STRLEN( p_char ).

CALL FUNCTION 'RSEC_GENERATE_PASSWORD'
EXPORTING
ALPHABET = p_char
ALPHABET_LENGTH = d_len
FORCE_INIT = ' '
OUTPUT_LENGTH = 8
IMPORTING
OUTPUT = d_password
EXCEPTIONS
SOME_ERROR = 1
OTHERS = 2
.
IF SY-SUBRC <> 0.
* MESSAGE ID SY-MSGID TYPE SY-MSGTY NUMBER SY-MSGNO
* WITH SY-MSGV1 SY-MSGV2 SY-MSGV3 SY-MSGV4.
ENDIF.