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Originating department:Commercial Services
Company Circular No:LCH.Clearnet Ltd Circular No 2640
 Service Circular No:LME: 421
Date:21 June 2010
To:All LME Clearing Members

Changes to FX and Interest Rate in the Xi+ feed

In the lead up to the implementation of Synapse, minor changes were made to the flagging of foreign exchange and interest rates in the External Interface (XI) feed. The changes would only have been apparent to members downloading ‘input’ closing price data from the LME Matching System (MCS) for certain prompt dates. Any member downloading entire exchange rate and interest rate files for all prompt dates would not have been affected.

For members who have taken all points on our interest and exchange rate curves (input and calculated) and used these to reconcile their margins, any change to the 'input' values and day count convention used should not have any impact to members or their systems. 

However,  those members taking 'input' values and calculating the values for remaining prompt dates may experience minor differences when reconciling their margins.

We apologise should any of these changes have caused you inconveniences. If you have any questions, please contact one of the following and we will respond to you as soon as possible: 
Martin West   martin.west@lchclearnet.com              +(44) 207 426 7089
Gary Lyons    gary.lyons@lchclearnet.com                +(44) 207 426 7122
David Farrar   david.farrar@lchclearnet.com              +(44) 207 426 7582 
Yours sincerely,


David Farrar

Director, Head of Commodities and Metals