PR Cancellation Idoc coming to SAP as Inbound idoc from Maximo

Hi Sap Guru's

My requirement : When ever PR cancellation is done in Maximo those information coming to SAP as a Inbound Idoc( PREQDL) format , but  they are sending Maximo PR number  , but sap can't understand the Maximo PR Num , so I want to change Maximo PR number to SAP PR number.

Could you please provide any BADI or User exit to change Inbound IDoc segments before posting to SAP.

Msg type ; PREQDL

IDoc Type : PREQDL01.

Thanks in advance,

Krishna.