Flowchart of Net Rate Netting (NRN) Procedures Page 2From Page 1 or Page 4Process 9 Prepare Letter 4127, Perfection of NRN Request. Make a copy of Letter 4127 and the original request for the case file. Issue Letter 4127 and copy of request to TP.Process 10Does the TP respond timely to the Letter 4127?If yes, go to Page 3.If no, go to Process 11.Process 11Mark through the date stamp on NRN request and initial it.Process 12Prepare Letter 4129, Return of NRN Request Letter. Make a copy of Letter 4129 and original request for the case file and issue Letter 4129 with original request to the TP.Continue to End.EndThis is the end of Page 2 of the flowchart.