Use CFOL Command Codes before requesting documents.ESTAB - Used to enter requests for original documents, copies, information, etc. Command Code ESTAB is used with a modifier and request code. Form 4251, Return Charge-Out, is generated by the computer as a result of CC ESTAB. Using a right-hand bracket (]) with CC ESTAB will generate the TIN, if ESTAB was preceded with CCs ACTON, ENMOD, REINF, SUMRY, or TXMOD. Modifiers:D - Document RequestsM - Microfilm RequestsR - Retired Document Update RequestsS - SCRIPS RequestsRequest CodesB - to request an ENTIRE BLOCKC - to request a copy of a return with all attachments.E - to request the original return for the CRIMINAL INVESTIGATION DivisionF - FOLLOW-UP request for no response to previous request.G - to request GAO FINANCIAL AUDIT MANAGEMENTI - to request from files INFORMATION from a return or other document.K - to request only a specific part or parts of a return be copied.M - Expedite search: MANAGEMENT USE ONLYN - ID THEFT PAPER request for paper returns or other paper documents related to identity theft cases.O - to request an ORIGINAL document.P - to request a copy of the first page of a return or other document.Q - ID THEFT SCAN requests scanned returns or documents with identity theft cases.R - for REIMBURSABLE COPY photocopy requests from taxpayer.S - to request an image from Correspondence Imaging SystemT - to RECHARGE documents to other areas.U - Expedites search: MANAGEMENT USE ONLYV - Expedites search: MANAGEMENT USE ONLYW - Request for Form W-2 ONLY REQUESTX - to request a print of a CII scanned document.NOTE: See IRM 2.3.17 for a detailed explanation of Request Codes.