HSBC - separate payment file ref nos required for salary and HMRC payments

When producing an HSBC file for salaries and for HMRC payment, PC will generate the two separate files but uses the same reference number. When uploading to HSBC the second file is rejected due to it having the same reference number and it is therefore not compatible with HSBC requirements. You have to currently manually amend two digits in the ref no to be able to use the file. The payments are made on two seperate dates and should have two different ref numbers.