ALT.ACCT.ID instead of ACC.ID in Field 50K - MT103

Hi Guys,
I'd like to know if it's possible to display the ALT.ACCT.ID (IBAN) in field 50a of an MT103 instead of the the actual T24 ACC.ID.
So far the Account ID included is the standard T24.
We have the IBAN as Alternative account 2 in the ACCOUNT.
Many thanks,

Hi,
Yes. You have to write a conversion routine where getting an IBAN number from ACCOUNT record and attach it in corresponding DE.FORMAT.SWIFT for corresponding field.

Hi,
Can you check what's wrong with this routine. Upon generating a msg preview, it gives mes this message (Connection not configured to handle input):

SUBROUTINE TST.SWF.RTN(Y.ACCT.NO)
$INSERT I_COMMON
$INSERT I_EQUATE
$INSERT I_F.ACCOUNT

FN.ACCOUNT = 'F.ACCOUNT' ; F.ACCOUNT =''
Y.AC.ALT.ACCT.NO='AC.ALT.ACCT.NO'
CALL OPF(FN.ACCOUNT,F.ACCOUNT)
CALL F.READ(FN.ACCOUNT,Y.ACCT.NO,R.ACCT.REC,F.ACCOUNT, ERR1)
Y.ACCT.RIB=R.ACCT.REC<Y.AC.ALT.ACCT.NO,5>
Y.ACCT.NO=Y.ACCT.RIB
RETURN
END

___

Many thanks,

Hi,
I made the modification and I still get the Connection not configured to handle input.

Btw, Here's the DE.SWIFT.FORMAT portion where the routine is attached:
Field Tag.12 50A
Field Name.12 DRAWDOWN ACCOUNT
Conversion.12.1 @TST.SWF.RTN
Multiples.12 NO
Inward Routine.12 NO
Outward Routine.12 NO

Any suggestions?
Many Thanks,

Thanks for your great help. it displays now.
I got only one problem which is the name is account number and the ordering name are on the same line in Field 50K.
how can I make it go to the new line right after displaying the numb

Many thanks. It worked :-)