# 504.1603 Procedures.

1. (a) Elements of a PIID. The PIID consists of 13 alphanumeric characters as follows:

   Character(s) | Content | Content Description Location | Example
   --- | --- | --- | ---
   1-6 | Activity Address Code | See 504.605(c) | 47PA01
   7-8 | Last Two Digits of Fiscal Year of Number Assignment |  | 15
   9 | Instrument Code | See 504.1603(b) | F
   10-13 | Serial Number | See 504.1603(c) | 0001

2. (b) Procurement Instrument Type Codes. Indicate the type of instrument consistent with the letter designation provided in FAR 4.1603(a)(3). The letter designations for the identified type of instruments unique to agency policy are identified as follows:

   Instrument | Letter Designation
   --- | ---
   Purchase orders (open market simplified acquisition) - manual | M
   Request for information | N
   Standing price quote (SPQ) | T

3. (c) Serial Number Codes.

   1. (1) A separate series of numbers may be used for each basic instrument type (see 504.1603(b)).

   2. (2) For delivery or task orders, each order issued by contracting office must receive a consecutive serial number. That is, orders are numbered in sequence as issued by the contracting office, but they are not in sequence under any individual contract.

   3. (3) At the beginning of each fiscal year, the first number assigned is 0001.

   4. (4) Alphanumeric characters are serially assigned after the numeric series is exhausted.

   5. (5) The allowable numeric and alphanumeric sequences, excluding alpha I and O are–

      1. (i) 0001 through 9999;

      2. (ii) A001 through A999, B001 through B999;

      3. (iii) and so on to Z001 through Z999.

   6. (6) Each issuing office is responsible for controlling serial number assignments.