SAP TREX_EXT_GET_HOSTS Function Module for get host of a landscape

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TREX_EXT_GET_HOSTS is a standard trex ext get hosts SAP function module available within SAP R/3 or S/4 Hana systems, depending on your version and release level. It is used for get host of a landscape 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 trex ext get hosts FM, simply by entering the name TREX_EXT_GET_HOSTS into the relevant SAP transaction such as SE37 or SE38.

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

Function TREX_EXT_GET_HOSTS 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 'TREX_EXT_GET_HOSTS'"get host of a landscape
  EXPORTING
   I_RFC_DESTINATION =  "RFC destination to TREX

 IMPORTING
   E_RETURN_CODE =  "Returncode
   E_RETURN_TEXT =  "Returntext
   E_HOSTS =  "Locations

EXCEPTIONS
   CONVERSION_ERROR = 1    ERROR = 2 

.

IMPORTING Parameters details for TREX_EXT_GET_HOSTS

I_RFC_DESTINATION - RFC destination to TREX

Data type: TREX_RFC-RFC_DESTINATION
Optional: No
Call by Reference: Yes

EXPORTING Parameters details for TREX_EXT_GET_HOSTS

E_RETURN_CODE - Returncode

Data type: TREX_RFC-RETURN_CODE
Optional: No
Call by Reference: Yes

E_RETURN_TEXT - Returntext

Data type: TREX_RFC-RETURN_TEXT
Optional: No
Call by Reference: Yes

E_HOSTS - Locations

Data type: TREXT_LOCATIONS
Optional: No
Call by Reference: Yes

EXCEPTIONS details

CONVERSION_ERROR - Error during conversion to UTF-8

Data type:
Optional: No
Call by Reference: Yes

ERROR - Error, see error message

Data type:
Optional: No
Call by Reference: Yes

Copy and paste ABAP code example for TREX_EXT_GET_HOSTS 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 TREX_EXT_GET_HOSTS

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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