How to make BP Mandatory field

Kindly help on this......SAP HANA  

IF :object_type = n'2' AND (:transaction_type = n'A' OR :transaction_type = n'U') THEN

    Declare temp_var_0 integer;

    SELECT

    (SELECT OCRD."CardCode"

    FROM OCRD

    WHERE "CardCode" = :list_of_cols_val_tab_del AND ISNULL(OCRD."Cellular", '') = '') INTO temp_var_0 FROM DUMMY;

    IF :temp_var_0 > 0 THEN

        error_message := 'Mobile Phone cannot be blank.';

        error := 12;

    END IF;

    Declare temp_var_1 integer;

    SELECT

    (SELECT OCRD."CardCode"

    FROM OCRD

    WHERE "CardCode" = :list_of_cols_val_tab_del AND ISNULL(OCRD."CardName", '') = '') INTO temp_var_1 FROM DUMMY;

    IF :temp_var_1 > 0 THEN

        error_message := 'BP Name cannot be blank.';

        error := 13;

    END IF;

    declare temp_var_2 integer;

    SELECT

    (SELECT OCRD."CardCode"

    FROM OCRD

    WHERE "CardCode" = :list_of_cols_val_tab_del AND ISNULL(OCRD."GroupCode", '') = '') INTO temp_var_2 FROM DUMMY;

    IF :temp_var_2 > 0 THEN

        error_message := 'BP Group cannot be blank.';

        error := 14;

    END IF;

END IF;

  Danish S.A.