sending excel attachment to the distribution list

Hi ,

I am sending an Excel file attachment in XLS format to the distrubution list using FM :SO_NEW_DOCUMENT_ATT_SEND_API1

I have passed the parameters as follows:

reclist-REC_TYPE = 'C'.

reclist-COM_TYPE = 'INT'.

reclist-NOTIF_DEL = 'X'.

reclist-NOTIF_NDEL = 'X'.

reclist-RECEIVER = p_DLIST.

APPEND reclist.

but i am receiving error message :

Exception from the class CX_SEND_REQ_BCS was caught

when I am passing the receiver as email address, its working fine.

Please let me know what is the issue?

Tjhanks and regards,

Madhuri