Issue while sending multiple JPEG file by mail in ABAP

Hi,

I have a requirement where we are going to attach a document ( bmp, jpg) , which is attached in VT02N Tcode.

I was able to successfully /attach the image in mail by   ABAP  code and i am using SO_NEW_DOCUMENT_ATT_SEND_API1 to send mails  . The problem is when i tried to open the attachments first two attachment are OK but while opening 3rd or 4th, an error is showing.