Update vendor master

Question

Hi Experts,
I have requirement where I want to automatically update bank details.
Update Bank account number with “-” at second last position only for preferred bank account.
I have used BADI ‘VENDOR_ADD_DATA’ and method ‘CHECK_ALL_DATA’ but it is
giving syntax error as : ‘The field "T_LFBK" cannot be changed’
Following is my sample code:
  loop at t_lfbk into ls_lfbk.
    clear: len.
    len = strlen( ls_lfbk-bankn ).
      if ls_lfbk-bvtyp = '0001'.
            len = strlen( ls_lfbk-bankn ).
            len = len - 1.
            concatenate ls_lfbk-bankn(len) '-' ls_lfbk-bankn+len(1) into ls_lfbk-bankn.
            clear len.
      endif.
    modify t_lfbk from ls_lfbk.
  endloop.

Answer 1

Hi Sreekanth,
I have tried this code, but it gives run time error as follows :
Short Text
    Error at assignment: Overwritten protected field.
What happened?
    Error in the ABAP Application Program
    The current ABAP program "ZCL_IM_VENDOR_ADD_DATA========CP" had to be
     terminated because it has
    come across a statement that unfortunately cannot be executed.
Error analysis
    A new value is to be assigned to the field "<FS>", although this field is
    entirely or partly protected against changes.
    The following are protected against changes:
    - Character literals or numeric literals
    - Constants (CONSTANTS)
    - Parameters of the category IMPORTING REFERENCE for functions and
    methods
    - Untyped field symbols not yet assigned a field using ASSIGN
    - TABLES parameters if the actual parameter is protected against changes
    - USING reference parameters and CHANGING parameters for FORMs, if the
    actual parameter is protected against changes and
    - Accesses using field symbols if the field assigned using ASSIGN is
    protected (or partially protected, e.g. key components of an internal
    table with the type SORTED or HASHED TABLE) against changes
    - Accesses using references, if the field bound to the reference is
    protected (or partially protected) against changes
    - External write accesses to READ-ONLY attributes,
    - Content of a shared object area instance accessed using a shared lock
    (ATTACH_FOR_READ).