Where is the code to avoid invoice split using multiple delivery numbers

Question

My functional consultant is asking me to debug because while trying to created invoice using the 2 deliveries are not commingling into a single invoice.  Means not able to create single invoice using both delivery notes.
He said, u201CThe split is happening in include RV60C901 based upon the vbrk-zukri value which is being populated in the perform "split_on_header_text". The thing is I do not know why this is the case - both of these DNs do not have any header text that is different.
Can you please help me look into why these split.
You can use VF01 and enter these 2 DN #s 6073122213  and 6073122212 in 2 different lines and choose the save icon. This will allow you to get to this code.
If you execute all the way through you will create an invoice. You can cancel this using VF11 (with the # that came up after full execution and the number 1 before that number) again by putting in the 2 new #s and choosing save.
Once this is cancelled you can go back to the VF01 step with the  6073122213  and 6073122212  doc #su201D.
Ho can I find out why ?
The coding perform split_on_header_text includes ztable selection :
*Get a list of text elements the program should check for
  select *
    appending corresponding fields of table t_zsplittext
  from zsplittext           " Texts ID's checked for splitting/combining
    where vkorg       =  vbrk-vkorg and" Sales Organisation
          zzenhancno  = 'VD-06'     and" Enhancement name
          tdobject    = 'VBBK'      and" Texts used within VD-06
          zzactive    <> ''.           " The record should be active

Answer 1

Hi SAM ,
first thing is u need to debug that program , and find out which enhancements it is using  t_zsplittext ?.
as per my knowledge Splitting will happens based on the config.
regards
Prabhu