The only parameter record update that is required is the change in the value of the Run Mode. The Reversal Run Mode allows users the opportunity to reverse the output of the last Generate Transaction Run Mode. Cost Allocation transactions are generated that reverse the allocations recorded on the original transactions. The accounting that occurs is the exact opposite of that described above under the Generate Transaction Run Mode. The net effect is that it appears as though the process was never run to Generate Transactions. This option may be employed if it is discovered that there was some incorrect setup or if incorrect assumptions were made regarding the appropriate base allocation percentages.