force/activity designator (F/AD) and the selected urgency of need designator (UND). F/AD assignment and the UND criteria are defined in OPNAVINST 4614.1 (series) and NAVSUP P-485. The UNDs applicable to the priority requirements are listed in table 17-5. CARD COLUMNS 62 THROUGH 64 (REQUIRED DELIVERY DATE). The required delivery  date  (RDD)  is  a  mandatory  entry.  Enter  the specific   three-digit   Julian   date   that   the   material   is required by the requisitioner. CARD  COLUMNS  65  AND  66  (ADVICE).  An Advice code is an optional code. It provides the supply source   with   special   instructions   applicable   to   the requisitioned  item.  When  these  card  columns  are  not used,  they  should  be  left  blank.  The  optional  Advice codes are listed in table 17-6. DATA  BLOCKS  L  THROUGH  V  (REMARKS). Normally,   requisitions   should   not   contain   remarks. Enter   remarks   only   when   absolutely   necessary   to identify  acceptable  substitutes,  clarify  delivery,  or  to indicate the planned firing month of training missiles. Avoid  including  superfluous  data  that  can  be  coded within the MILSTRIP format. For example, by placing the  UIC  of  the  activity  where  the  material  is  to  be delivered in the supplementary address, by using Signal code J, and by providing an RDD, the requisitioner can encode where and when delivery should be made and eliminate any remarks. If remarks are used, you should ensure  that  a  document  identifier  of  AOE  or  AO5  is used. Message Requisitioning by DAAS Ammunition MILSTRIP requisitions are prepared by fleet units in a specially coded standard format and transmitted  by  message  directly  to  DAAS,  Dayton, Ohio. DAAS redirects each requisition on the message to the activity indicated by the routing identifier. DAAS redirects  the  message  by  way  of  the  automatic  digital network  (AUTODIN)  system.  The  activity  receiving the  message  takes  the  necessary  action  to  fill  or  refer the requisition, as appropriate. Referrals and retransmittals are done by AUTODIN. The AUTODIN system provides the addresses with a punched card for each   document   in   the   originator's   message.   This process  alleviates  the  need  for  message  handling  or keypunching by the addressee. Unclassified MILSTRIP requisitions without remarks   are   the   only   ammunition   requisitions   that qualify for DAAS transmission. As mentioned earlier, remarks can normally be avoided by careful coding of the   requisition.   When   necessary,   remarks   can   be transmitted  in  a  separate  (non-DAAS)  message.  The following types of requisitions are NOT submitted by DAAS: 17-9 URGENCY OF NEED DESIGNATOR PRIORITY DESIGNATOR A (UNABLE TO PERFORM) 01 02 03 07 08 B (PERFORMANCE IMPAIRED) 04 05 06 09 10 C (ROUTINE) 11 12 13 14 15 Table 17-5.—UND Equated to Priority Designators ADVICE CODES MEANING 2B Requested item only will suffice. Do not substitute or interchange. 2D Furnish exact quantity requested. Do not adjust to unit pack quantity. 2T Deliver to the ultimate consignee by the RDD or cancel requirement. 5C Do  not  centrally  back  order  or  procure.  Substitute  acceptable.  Reflect  unfilled quantity not available for delivery. Fill or kill at inventory control point level. Table 17-6.—Advice Codes