SAP TXW_FILE_OPEN_FOR_READ Function Module for Open file on application server for reading

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TXW_FILE_OPEN_FOR_READ is a standard txw file open for read SAP function module available within SAP R/3 or S/4 Hana systems, depending on your version and release level. It is used for Open file on application server for reading processing and below is the pattern details for this FM, showing its interface including any import and export parameters, exceptions etc. there is also a full "cut and paste" ABAP pattern code example, along with implementation ABAP coding, documentation and contribution comments specific to this or related objects.

See here to view full function module documentation and code listing for txw file open for read FM, simply by entering the name TXW_FILE_OPEN_FOR_READ into the relevant SAP transaction such as SE37 or SE38.

Function Group: TXW2
Program Name: SAPLTXW2
Main Program: SAPLTXW2
Appliation area:
Release date: N/A
Mode(Normal, Remote etc): Normal Function Module
Update:

Function TXW_FILE_OPEN_FOR_READ pattern details

In-order to call this FM within your sap programs, simply using the below ABAP pattern details to trigger the function call...or see the full ABAP code listing at the end of this article. You can simply cut and paste this code into your ABAP progrom as it is, including variable declarations.

CALL FUNCTION 'TXW_FILE_OPEN_FOR_READ'"Open file on application server for reading
  EXPORTING
   FILE_NAME =  "File name
*  FILE_POSITION =  "Position in file
*  FILE_ENCODING =  "Unicode Mode for DART Files
*  FILE_CODEPAGE =  "Codepage

EXCEPTIONS
   FILE_OPEN_FAILED = 1    NO_AUTHORITY_TO_READ = 2 

.

Customer Function user exits

Below is a list of CUSTOMER FUNCTION exit user exits that are available within this program and maybe relevant for this FM.
EXIT_SAPLTXW2_001 Fill customer fields in SAP structures
EXIT_SAPLTXW2_002 Add customer defined data sources to data file

IMPORTING Parameters details for TXW_FILE_OPEN_FOR_READ

FILE_NAME - File name

Data type:
Optional: No
Call by Reference: No ( called with pass by value option)

FILE_POSITION - Position in file

Data type: I
Optional: Yes
Call by Reference: No ( called with pass by value option)

FILE_ENCODING - Unicode Mode for DART Files

Data type: TXW_UNICODE_MODE
Optional: Yes
Call by Reference: No ( called with pass by value option)

FILE_CODEPAGE - Codepage

Data type: TXW_CODEPAGE
Optional: Yes
Call by Reference: Yes

EXCEPTIONS details

FILE_OPEN_FAILED - File could not be opened

Data type:
Optional: No
Call by Reference: No ( called with pass by value option)

NO_AUTHORITY_TO_READ - Authority to read dataset needed

Data type:
Optional: No
Call by Reference: Yes

Copy and paste ABAP code example for TXW_FILE_OPEN_FOR_READ Function Module

The ABAP code below is a full code listing to execute function module POPUP_TO_CONFIRM including all data declarations. The code uses the original data declarations rather than the latest in-line data DECLARATION SYNTAX but I have included an ABAP code snippet at the end to show how declarations would look using the newer method of declaring data variables on the fly. This will allow you to compare and fully understand the new inline method. Please note some of the newer syntax such as the @DATA is not available until a later 4.70 service pack (SP8), which i why i have stuck to the origianl for this example.

ABAP code using 7.40 inline data declarations to call FM TXW_FILE_OPEN_FOR_READ

The below ABAP code uses the newer in-line data declarations. This allows you to see the coding differences/benefits of the later inline syntax. Please note some of the newer syntax below, such as the @DATA is not available until 4.70 EHP 8.

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