Document Sequence for Budget Transfer JV's

Hi Experts,

I need a Document Sequence number for the automated JV's  with "Category = Budget & Source = Transfer" created through Budget Transfer Form between two Account Code Combinations with

Please advise a detailed Solution for getting a document sequence number for the automated JV's created from Budget Transfer Form.

Path:--

1.Budget---Enter--Transfer

2, Transfer the Budget amount between two Code Combinations.

3. Close the Form & a Concurrent Program  (Journal Import) will run in the back end which creats a JV with Category = Budget & Source = Transfer

Now How can I define a Document sequence for those automated JV created after doing Budget Transfer b/w 2 a//c Code combinations