how to create a ACH file

Hi,

Here my requirement is , I need to create a ACH file using webMethods from SAP Payment IDOCS.

  1. what is ACH file?
  2. Is it possible to create a ACH file using webMethods?
  3. will 4.6 supports the creating of ACH file?
  4. If it is what are the steps i need to follow in webMethods to create ACH file?

Please reply me as early as possible.

Thanks in Advance.

nani.