SAP BANK_NUMBER_CHECK Function Module for Check of Bank Key
BANK_NUMBER_CHECK is a standard bank number check SAP function module available within SAP R/3 or S/4 Hana systems, depending on your version and release level. It is used for Check of Bank Key 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 bank number check FM, simply by entering the name BANK_NUMBER_CHECK into the relevant SAP transaction such as SE37 or SE38.
Function Group: SSRV
Program Name: SAPLSSRV
Main Program: SAPLSSRV
Appliation area:
Release date: 14-Apr-1998
Mode(Normal, Remote etc): Normal Function Module
Update:

Function BANK_NUMBER_CHECK 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 'BANK_NUMBER_CHECK'"Check of Bank Key.
EXPORTING
* BANK_ACCOUNT = ' ' "Bank Account Number
* BANK_COUNTRY = ' ' "Bank Country
* BANK_NUMBER = ' ' "Bank Key
EXCEPTIONS
DATA_MISSING = 1 NOT_VALID = 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_SAPLSSRV_001 Check of bank account number: User exit for checking entries
EXIT_SAPLSSRV_002 Check of bank account number: User exit for checking entries
EXIT_SAPLSSRV_003 User Exit: Bank Data Checks (SAPLSSRV)
IMPORTING Parameters details for BANK_NUMBER_CHECK
BANK_ACCOUNT - Bank Account Number
Data type: KNBK_BF-BANKNDefault: SPACE
Optional: Yes
Call by Reference: No ( called with pass by value option)
BANK_COUNTRY - Bank Country
Data type: KNBK_BF-BANKSDefault: SPACE
Optional: Yes
Call by Reference: No ( called with pass by value option)
BANK_NUMBER - Bank Key
Data type: KNBK_BF-BANKLDefault: SPACE
Optional: Yes
Call by Reference: No ( called with pass by value option)
EXCEPTIONS details
DATA_MISSING - Entry Incomplete
Data type:Optional: No
Call by Reference: No ( called with pass by value option)
NOT_VALID - Check Not Successful
Data type:Optional: No
Call by Reference: No ( called with pass by value option)
Copy and paste ABAP code example for BANK_NUMBER_CHECK 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.| DATA: | ||||
| lv_bank_account | TYPE KNBK_BF-BANKN, " SPACE | |||
| lv_data_missing | TYPE KNBK_BF, " | |||
| lv_not_valid | TYPE KNBK_BF, " | |||
| lv_bank_country | TYPE KNBK_BF-BANKS, " SPACE | |||
| lv_bank_number | TYPE KNBK_BF-BANKL. " SPACE |
|   CALL FUNCTION 'BANK_NUMBER_CHECK' "Check of Bank Key |
| EXPORTING | ||
| BANK_ACCOUNT | = lv_bank_account | |
| BANK_COUNTRY | = lv_bank_country | |
| BANK_NUMBER | = lv_bank_number | |
| EXCEPTIONS | ||
| DATA_MISSING = 1 | ||
| NOT_VALID = 2 | ||
| . " BANK_NUMBER_CHECK | ||
ABAP code using 7.40 inline data declarations to call FM BANK_NUMBER_CHECK
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.| "SELECT single BANKN FROM KNBK_BF INTO @DATA(ld_bank_account). | ||||
| DATA(ld_bank_account) | = ' '. | |||
| "SELECT single BANKS FROM KNBK_BF INTO @DATA(ld_bank_country). | ||||
| DATA(ld_bank_country) | = ' '. | |||
| "SELECT single BANKL FROM KNBK_BF INTO @DATA(ld_bank_number). | ||||
| DATA(ld_bank_number) | = ' '. | |||
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