validation in Module pool Program

[naren112]

<b>Hi ,

I created a module pool Program , I hav taken one parameter .. How to do the validation for this paramater in screen .

And if Im taking a set of parameter - how to do the validation ..

Regards,

Narender</b>

[Former Member]

Hi,

Do the validation in the CHAIN...ENDCHAIN stmt.

Regards

Subramanian

[naren112]

<b>hi Subramanian ,

Chain Endchain is used for a set of parameter , Just I want to validate a single parameter ...

Regards,

Narender</b>

[gopi_narendra]

in the PAI..

module check_data.

select single * from <table>

where <tablefield> = <screenfield-value>.

if sy-subrc = 0.

else.

message E000(00) with '<ScreenField-Value> does not exit'.

endif.

endmodule.

in the flow logic for the screen. write as

chain.

field : <screenfield>.

module check_data.

endchain.

Regards

Gopi

[Former Member]

Naren,

Use FIELD field name MODULE MODULE_3.

Pls. Mark if useful.

[Former Member]

Hi, you just need to put a validation module in the PAI in the screen flow logic. eg if your field is zzz-field1, use a statement in the PAI like this:

FIELD ZZZ-FIELD1 MODULE VALIDATE_FIELD1.

or, to only process conditionally, use

FIELD ZZZ-FIELD1 MODULE VALIDATE_FIELD1 ON INPUT

or

FIELD ZZZ-FIELD1 MODULE VALIDATE_FIELD1 ON REQUEST.

if your module then generates an error message this field will be highlighted for action.

if you have several fields you need to chain them eg ZZZ-FIELD1 and ZZZ-FIELD2:

CHAIN.

FIELD: ZZZ-FIELD1, ZZZ-FIELD2.

MODULE VALIDATE_FIELDS ON CHAIN-INPUT " (or ON CHAIN-REQUEST)

ENDCHAIN.

[Former Member]

Hi Narender,

U need to do the validation in PAI event of the screen as below :

PROCESS AFTER INPUT.

MODULE user_command_0100.

• input check for field cvp number

FIELD : cvp_no. <b>"Screen Field needs to be validated</b>

MODULE show_cv_desc.

And the module definition is as follows :

MODULE show_cv_desc INPUT.

ws_repid = sy-cprog.

ws_num = '1000'.

i_dynfields-fieldname = 'CVP_NO'.

APPEND i_dynfields.

CALL FUNCTION 'DYNP_VALUES_READ'

EXPORTING

dyname = ws_repid

dynumb = ws_num

TABLES

dynpfields = i_dynfields

EXCEPTIONS

invalid_abapworkarea = 1

invalid_dynprofield = 2

invalid_dynproname = 3

invalid_dynpronummer = 4

invalid_request = 5

no_fielddescription = 6

invalid_parameter = 7

undefind_error = 8

double_conversion = 9

stepl_not_found = 10

OTHERS = 11.

IF sy-subrc EQ 0.

READ TABLE i_dynfields WITH KEY fieldname = 'CVP_NO'.

IF sy-subrc EQ 0.

cvp_no = i_dynfields-fieldvalue.

ENDIF.

ENDIF.

<b>***********Validation</b>

if cvp_no = '0013'.

message e000(zocm) with 'Wrong Entry'. <b>" If the user enters 0013 for cvp_no</b> endif.

ENDMODULE. " show_cv_desc INPUT

Please do reward helpful answers.

[jayanthi_jayaraman]

Hi,

In PAI,

FIELD fieldname MODULE validate.

MODULE validate INPUT.

..do the validation here....

ENDMODULE. "Validate INPUT

[Former Member]

in PAI you have to validate the field.

FIELD f1 MODULE m1 [ON INPUT|ON REQUEST].

things in sqare bracket are optional [].

in abap editor it will show

MODULE m1 input.

<do validation code>.

ENDMODULE.

regards

shiba dutta