Bills Receivable R12.1.3

my issue when user enter receipt as bills receivable with receipt number 1000 then after run process for bills Receivable and go to Cash Management to Clear this receipt he find Receipt Number the same generated from run Auto-risk Request like as 56675 and not find the receipt number (1000) when he   Entered receipt ? how to make the number appear in CE is the same on Receipt when user make (1000)