UDF -Golobal variables to store the data

Hi,
We are sending order information to source system (SAP).
Here i need to chk in message mapping : if it is the
first time we received that order into SAP or not.
As per the expert suggestion its better to use global variable and store the order no and compare it the next time it comes.
Let me know the UDF code.
Thanks
MMV

HI,
Refer below blog
/people/miguel.jorge/blog/2006/10/10/interesting-use-of-global-variables
Here you can maintain the Global variable and then in 1st mapping assign the value for it as had shown in UDF code in blog and then innext mapping check the value of global variable.
BUT...as per your suggestion I doubt how you will maintain multiple order information in Global variables.
Better to go for Either DB / RFC Lookup here you can maintain the table and can check from it whether the Order information is previously send or not
For db/rfc lukup refer to:
Lookups in XI made simpler : DB lukup
/people/siva.maranani/blog/2005/08/23/lookup146s-in-xi-made-simpler
RFC Mapping Lookups
/people/sravya.talanki2/blog/2005/12/21/use-this-crazy-piece-for-any-rfc-mapping-lookups
Thanks
Swarup

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UDF -Golobal variables to store the data

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