MTOM attachment in Webmethods.

Mtom attachment will work for only soap 1.2 version 

so that while creating wsdl choose the soap 1.2 version.

and in the WSDL enable the mtom attachment property true .

Please fallow the below steps for the attachments in Integration server:

1. Create a flow service 

2.pub.file.getFile 

   in the get file service pipeline  add the file location and loadAs bytes.

3.   convert the loded file into base 64 encoding format.

      pub.string.base64 encode 

     in the  base 64 encode pipeline set useNewLine field false.

4. create a xop object for encoded string.

    pub.soap.utils.createXop Object     

    in the createXop service pipeline provice the contentType 

  EX: MIME type of the file. 

         application/pdf

For same service create the WSDL .