Processing Payables payment output files When you process payment output files, the checks and remittance advice documents are generated. Select Payables > Payments. Click the Output Files tab. Open a record. Select Actions > Process IDM Output Files. Specify this information: Process All To process all IDM output files, select this check box. To, From Optionally, specify a range. These fields are only available if the Process All check box is blank. Click Submit.