Xpath expression substring or contains

Question

Hi ,
I have this inbound source message
<?xml version="1.0" encoding="UTF-8" ?>
- <rfc:Z_RFC xmlns:rfc="urn:sap-com:document:sap:rfc:functions">
- <TO_DATA>
- <item>
  <LINE>000012E3 ABCD 3I 20070911164941</LINE>
  </item>
  </TO_DATA>
  </rfc:Z_RFC>
and two inbound interfaces
condition is , if "ABCD" exists in the LINE field(type string) then the corresponding Interface mapping should execute.
I know the exact location of "ABCD occurence so I can use either contains or substring functions.
I tried /P1:Z_RFC/TO_DATA/item[substring(LINE,X,Y)="ABCD"] EX no right operand
/P1:Z_RFC/TO_DATA/item[substring(LINE,X,Y)]= "ABCD"  with right operand
substring((/P1:Z_RFC/TO_DATA/item/LINE),X,Y) = "ABCD"
similarly I tried around with <b>"contains"</b> function too.
but not able to apply exactly, I tried with different options looking at different blogs in SDN.
so how should be the Xpath expression ?
thank you.
Babu

Answer 1

yes,
I have two different interface mappings in interface determination.  
I have same sender RFC interface(outbound) and two different target interfaces  and so why I have two different interface mapping,MMs.
sender and reciever systems are same in both cases.
.................condition1--interface mapping1--
sender -
|--                                                                |--
Receiver
.................condition2--interface mapping2--
>>>two dfferent interfaces one when the condition satisfies and other when the condition doens'tmacth...
I know why you are asking this,if we have one interface map and two target interfaces then we need to go for enhanced interface determination.
and need not to be just "substring" or "contains" function ,just any function will do.
so any suggestion about the above scenario in ASCII diagram?
thank you.
Babu