SAP STRING_CONCATENATE Function Module for Concatenates (links) two strings without multibyte handling

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STRING_CONCATENATE is a standard string concatenate SAP function module available within SAP R/3 or S/4 Hana systems, depending on your version and release level. It is used for Concatenates (links) two strings without multibyte handling 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 string concatenate FM, simply by entering the name STRING_CONCATENATE into the relevant SAP transaction such as SE37 or SE38.

Function Group: CSTR
Program Name: SAPLCSTR
Main Program: SAPLCSTR
Appliation area:
Release date: 05-Sep-2002
Mode(Normal, Remote etc): Normal Function Module
Update:

Function STRING_CONCATENATE 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 'STRING_CONCATENATE'"Concatenates (links) two strings without multibyte handling
  EXPORTING
   STRING1 =  "First String
   STRING2 =  "Second String

 IMPORTING
   STRING =  "Concatenated String

EXCEPTIONS
   TOO_SMALL = 1 

.

IMPORTING Parameters details for STRING_CONCATENATE

STRING1 - First String

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

STRING2 - Second String

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

EXPORTING Parameters details for STRING_CONCATENATE

STRING - Concatenated String

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

EXCEPTIONS details

TOO_SMALL - Output field too short

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

Copy and paste ABAP code example for STRING_CONCATENATE 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 STRING_CONCATENATE

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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