The below code shows how function module FILE_GET_NAME is used to retrieve the physical file path of a logical file name. use Transaction FILE to maintain logical file names on your SAP system.
Retreive physical file path of a logical file name data: ld_filename type string. CALL FUNCTION 'FILE_GET_NAME' EXPORTING * CLIENT = SY-MANDT LOGICAL_FILENAME = 'SD_OPEN_ORDERS' "Logical file name see sap tcode 'FILE' * OPERATING_SYSTEM = SY-OPSYS * PARAMETER_1 = ' ' * PARAMETER_2 = ' ' * PARAMETER_3 = ' ' * USE_PRESENTATION_SERVER = ' ' * WITH_FILE_EXTENSION = ' ' * USE_BUFFER = ' ' * ELEMINATE_BLANKS = 'X' IMPORTING * EMERGENCY_FLAG = * FILE_FORMAT = FILE_NAME = ld_filename "physical file EXCEPTIONS FILE_NOT_FOUND = 1 OTHERS = 2.