This figure is an example of a Form 3893, Re-Entry Document Control. This form is used to re-input a return that has not posted to an account or module. Complete the following areas of Form 3893: File type, Alpha/Numeric Block Control Number, Document Locator Number, DLN Year Digit, Remarks (state your instructions in the remarks area), Process As, Serial Number, Prepared By, Telephone Extension, Date, Reprocessable Document.