how delete existent message id?

HI EXPORTS,

i encounter a question，pls help me.

the error is described below:

<?xml version="1.0" encoding="UTF-8" standalone="yes" ?>

- <!-- Request Message Mapping

-->

- http://sap.com/xi/XI/Message/30" xmlns:SOAP=" http://schemas.xmlsoap.org/soap/envelope/" SOAP:mustUnderstand="1">

<SAP:Category>XIServer</SAP:Category>

<SAP:Code area="PERSIST">MSGGUID_EXISTING</SAP:Code>

<SAP:P1>4ED221972DE84A0E0F30851861109C86</SAP:P1>

<SAP:P2>CENTRAL</SAP:P2>

<SAP:P3>000</SAP:P3>

<SAP:P4 />

<SAP:AdditionalText />

<SAP:Stack>Message ID 4ED221972DE84A0E0F30851861109C86 for pipeline CENTRAL version 000 already exists in system</SAP:Stack>

<SAP:Retry>N</SAP:Retry>

</SAP:Error>

request in this regards.

thx in advances.

rgds.