Pictured is an example of a blank Form 8813, Partnership Withholding Tax Payment Voucher (Section 1446), processed with Document Codes 17 or 19. Added to the blank form are the Section 01 Alpha Field Designators (AFD) that are used in the revenue receipt program to process this form. The AFDs are listed in the order they appear on the form as follows:Field 01TXP, Tax Period, is located in the middle of the Form 8813 (beneath the form title and to the right of the calendar year beginning and ending information).Field 01TIN, Taxpayer Identification Number, is located on Line 1 (Partnership’s U.S. employer identification number), in the upper middle center part of the form, beneath the Form 8813 title..Field 01TA>, Primary Transaction Amount (C/Gen, Non-Correctable), is the computer-generated amount located on Line 2, in the upper middle center part of the form, beneath the Form 8813 title.Field 01NC, Name Control, is located on Line 3 (directly beneath Line 1), in the middle part of the form, beneath the Form 8813 title.. This box has the following caption/title, entitled, PARTNERSHIP'S name, address, (number, street, and room or suite number),