Infotype 0416 - Quota Compensation

We currently have a process where by employees are allowed to request to buy leave through ESS.   When this happens a locked Quota Compensation (0416) record is created and a workflow sent to a line manager for approval.  When the manager approves the 0416 is unlocked.  

I am unlocking the 0416 using FM HR_INFOTYPE_OPERATION but have found that the days from the 0416 are not showing up as a deduction against the employees absence Quota (it2006).  

If I unlock the 0416 manually using transaction PA30 then the leave does show up as a deduction against the 2006.

I have included the code I'm using to call the FM below.  Any ideas would be appreciated.

Thanks,
Paul


*************************************************
  call function 'HR_INFOTYPE_OPERATION'
    exporting
      infty          = '0416'
      number        = p0416-pernr
      subtype       = p0416-subty
      objectid      = p0416-objps
      lockindicator = p0416-sprps
      validityend   = p0416-endda
      validitybegin = p0416-begda
      recordnumber  = p0416-seqnr
      record        = p0416
      operation     = 'EDQ'
      nocommit      = nocommit
    importing
      return        = error_message
      key           = pakey.