SAP VALIDATE_BEFORE_EINVREF_GEN Function Module for Validation before einvoice reference number generation

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VALIDATE_BEFORE_EINVREF_GEN is a standard validate before einvref gen SAP function module available within SAP R/3 or S/4 Hana systems, depending on your version and release level. It is used for Validation before einvoice reference number generation 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 validate before einvref gen FM, simply by entering the name VALIDATE_BEFORE_EINVREF_GEN into the relevant SAP transaction such as SE37 or SE38.

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

Function VALIDATE_BEFORE_EINVREF_GEN 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 'VALIDATE_BEFORE_EINVREF_GEN'"Validation before einvoice reference number generation
  EXPORTING
   I_BUKRS =  "Company Code
   I_VKTYP =  "Contract Account Category

 IMPORTING
   E_GEN_FLAG =  "Boolean Variable (X=True, -=False, Space=Unknown)
   E_EINV_ID =  "Agreement ID for eInvoice

EXCEPTIONS
   NO_AGREEMENT = 1    NO_VALID_AGREEMENT = 2 

.

IMPORTING Parameters details for VALIDATE_BEFORE_EINVREF_GEN

I_BUKRS - Company Code

Data type: T001-BUKRS
Optional: No
Call by Reference: Yes

I_VKTYP - Contract Account Category

Data type: FKKVK-VKTYP
Optional: No
Call by Reference: Yes

EXPORTING Parameters details for VALIDATE_BEFORE_EINVREF_GEN

E_GEN_FLAG - Boolean Variable (X=True, -=False, Space=Unknown)

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

E_EINV_ID - Agreement ID for eInvoice

Data type: DFKKAGRID_NO-EINV_ID
Optional: No
Call by Reference: Yes

EXCEPTIONS details

NO_AGREEMENT - No agreement existing

Data type:
Optional: No
Call by Reference: Yes

NO_VALID_AGREEMENT - Agreement with correct validity not exisiting

Data type:
Optional: No
Call by Reference: Yes

Copy and paste ABAP code example for VALIDATE_BEFORE_EINVREF_GEN 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 VALIDATE_BEFORE_EINVREF_GEN

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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