SAP DMC_GENERIC_READER Function Module for generic reader module (read from DB table)

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DMC_GENERIC_READER is a standard dmc generic reader SAP function module available within SAP R/3 or S/4 Hana systems, depending on your version and release level. It is used for generic reader module (read from DB table) 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 dmc generic reader FM, simply by entering the name DMC_GENERIC_READER into the relevant SAP transaction such as SE37 or SE38.

Function Group: DMC_GENERIC_READ_WRITE
Program Name: SAPLDMC_GENERIC_READ_WRITE
Main Program: SAPLDMC_GENERIC_READ_WRITE
Appliation area:
Release date: N/A
Mode(Normal, Remote etc): Remote-Enabled
Update:

Function DMC_GENERIC_READER 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 'DMC_GENERIC_READER'"generic reader module (read from DB table)
  EXPORTING
*  IT_QRY =  "table type for selections
*  I_ALL_CLIENTS =  "read from all clients

CHANGING
   CT_PAYLOAD_TAB =  "table for generic reader / writer modules

EXCEPTIONS
   SQL_ERROR = 1    NO_AUTHORIZATION = 2 

.

IMPORTING Parameters details for DMC_GENERIC_READER

IT_QRY - table type for selections

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

I_ALL_CLIENTS - read from all clients

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

CHANGING Parameters details for DMC_GENERIC_READER

CT_PAYLOAD_TAB - table for generic reader / writer modules

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

EXCEPTIONS details

SQL_ERROR - SQL error

Data type:
Optional: No
Call by Reference: Yes

NO_AUTHORIZATION - no authorization

Data type:
Optional: No
Call by Reference: Yes

Copy and paste ABAP code example for DMC_GENERIC_READER 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 DMC_GENERIC_READER

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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