need help in calling a webservice function from ESB

High Level Flow Details,
DB >>>> ESB>>>>DP>>>XYZ(WebService)

Right now i am inserting(ABC DEF)… this format is existing in XYZ so we are getting the proper response,

Now i want to enter(ABCDEF) so that they can get the details of ABC DEF from XYZ.

In future we would like to enter ABCDEF and ABC DEF,

what would be the best approach to call this from ESB.


anyone please !!!