The record position 23-24 contain the abbreviated unit of issue for-the material. The record positions 25-29 contain the quantity of material shipped to the activity. The record positions 30-43 contain the document number of the requisition. The record position 44 may contain a Suffix code, when applicable. The record positions 45-50 contain the supple- mentary address from the requisition. The record position 51 contains the Hold code, when applicable. Refer to Appendix 17 of NAVSUP P485 or Appendix 8U of NAVSUP P-567 for a list of Hold codes. The record positions 52-53 contain the Fund code of the requisition. The record positions 55-56 contain the cognizance symbol of the material. The record positions 57-59 contain the shipment date. The record positions 60-61 contain the priority designator from the requisition. The record positions 62-76 may be blank. When used, they contain the transportation control number (TCN), government bill of lading (GBL), and registered or certified mail numbers that apply. The record position 77 contains the Mode of Shipment code. Refer to Appendix A7 of NAVSUP P-437 for a list of Mode of Shipment codes. The record positions 78-80 contain the date material is available for shipment or port of embarkation. When appropriate to the Media and Status code of the requisition, the shipping status may be provided in a message format. The format of the shipment status sent by message is the same as the supply status. When sent in abbreviated format, it will contain the following information in sequence. Document identifier Quantity Document number Suffix code, if applicable Date shipped or released to carrier Priority designator l TCN, GBL, registered or certified mail number l Mode of Shipment code See figure 4-5 for a sample of an abbreviated MILSTRIP message. REQUISITION MONITORING As an AK you will be involved in maintaining current information for outstanding requisitions on file. File maintenance includes monitoring those requisitions in the outstanding file. Some of the information to consider before taking action on a requisition is the type and date of the latest status received. This information will help you decide the next action to take. TYPES OF FOLLOW-UP There are four types of follow-ups. The following paragraphs describe the different types of follow-ups. Refer to Appendix A4 of NAVSUP P-437 for a list of Document Identifier codes used in this chapter. The first type of follow-up is submitted to update the requisition status previously received. These follow-up inquiries contain document identifier AF followed by numbers 1 through 9. In some cases, the requisition receives a BF status after submission of the AF series follow-up. When this happens, submit an AT series follow-up to the supply source. The second type is the follow-up submitted to get the latest status, and it maybe processed as a requisition. The supply source will process this document as a requisition when there is no record of receipt of the original requisition. This follow-up inquiry contains the document identifier AT series followed by numbers or letters. The third type is the follow-up submitted as a supply action to improve estimated shipping date (ESD) from previously finished status documents. This follow-up inquiry contains document identifier AFC. The AFC follow-up applies only to requisitions with priority designators 01-08. It will be submitted only after receipt of an ESD that will not meet the material usage or need dates. Only the requisitioner, supplementary addressee, or the activity contained in record position 54 of the requisition may submit this follow-up. The fourth type is the follow-up submitted to obtain the latest status on a previously submitted cancellation request. This type may be processed as a cancellation request if the original was not received. This follow-up contains document identifier AK series. 4-15