%let _amlmsg_="&AMLLAND\sasmail.csv does not exist. DB_KC.FSK_ADDRESS_BOOK
could not be updated."; /*cause error  below*/

%let _amlmsg_=&AMLLAND\sasmail.csv does not exist. DB_KC.FSK_ADDRESS_BOOK
could not be updated.;  /* this works */

MLOGIC(DETECTION.LOAD_ADDRESS_BOOK):  Beginning execution.
MLOGIC(DETECTION.LOAD_ADDRESS_BOOK):  %LET (variable name is _AMLMODULE_)
MLOGIC(DETECTION.LOAD_ADDRESS_BOOK):  %LET (variable name is TRANS_RC)
MLOGIC(DETECTION.LOAD_ADDRESS_BOOK):  %LET (variable name is _AMLMSG_)
MLOGIC(DETECTION.LOAD_ADDRESS_BOOK):  %LET (variable name is MAILSERVER)
SYMBOLGEN:  Macro variable AMLLAND resolves to d:\detection\data\landing
MLOGIC(DETECTION.LOAD_ADDRESS_BOOK):  %IF condition %sysfunc(FILEEXIST
("&AMLLAND\sasmail.csv")) is FALSE
MLOGIC(DETECTION.LOAD_ADDRESS_BOOK):  %LET (variable name is _AMLMSG_)
SYMBOLGEN:  Macro variable AMLLAND resolves to d:\detection\data\landing
NOTE: Line generated by the macro variable "SUBJECT".
1         subject=""d:\detection\data\landing\sasmail.csv does not exist.
DB_KC.FSK_ADDRESS_BOOK could not be updated.""
                     -
                     23
ERROR 23-2: Invalid option name :.

1    !    subject=""d:\detection\data\landing\sasmail.csv does not exist.
DB_KC.FSK_ADDRESS_BOOK could not be updated.""
                        ---------
                        23
ERROR 23-2: Invalid option name detection.

1    !    subject=""d:\detection\data\landing\sasmail.csv does not exist.
DB_KC.FSK_ADDRESS_BOOK could not be updated.""
                                  ----
                                  23
ERROR 23-2: Invalid option name data.

1    !    subject=""d:\detection\data\landing\sasmail.csv does not exist.
DB_KC.FSK_ADDRESS_BOOK could not be updated.""
                                       -------
                                       23
ERROR 23-2: Invalid option name landing.

1    !    subject=""d:\detection\data\landing\sasmail.csv does not exist.
DB_KC.FSK_ADDRESS_BOOK could not be updated.""
                                                           ----
                                                           23
ERROR 23-2: Invalid option name does.

1    !    subject=""d:\detection\data\landing\sasmail.csv does not exist.
DB_KC.FSK_ADDRESS_BOOK could not be updated.""
                                                                ---
                                     ---

23                                      23
ERROR 23-2: Invalid option name not.

1    !    subject=""d:\detection\data\landing\sasmail.csv does not exist.
DB_KC.FSK_ADDRESS_BOOK could not be updated.""

                   -----

                   23
ERROR 23-2: Invalid option name could.