| Segment | Ebene | Beschreibung | Opt/Mand. |
|---|
| UNH | 0 | A service segment starting and uniquely identifying a message. The message type code for the Reservation message is RESMSG. Note: Reservation messages conforming to this document must contain the following data in segment UNH, composite S009: Data element 0065 RESMSG D A UN | Mandatory |
| BGM | 0 | A segment identifying the Reservation message. | Mandatory |
| LAN | 0 | A segment identifying the language used in a transaction. | Optional |
| PCD | 0 | A segment containing a percentage factor which relates to the services or products requested in the whole message. | Optional |
| PAI | 0 | A segment specifying a method of payment relating to the services or products requested in the whole message. | Optional |
| DTM | 0 | A segment specifying a date that applies to the message, (e.g. date of this message, date until such message is valid). | Optional |
| FTX | 0 | A segment for information in coded or clear form to provide any other information related to the whole message. | Optional |
| LOC | 0 | A segment containing location information pertaining to the services or products requested in the whole message. | Optional |
| MOA | 0 | A segment containing the monetary amounts to be paid by the sender for all beneficiaries, services or products requested in the whole message. | Optional |
| PYT | 0 | A segment specifying payment terms relating to the services or products requested in the whole message. | Optional |
| FII | 0 | A segment containing financial institution information relating to the services or products requested in the whole message. | Optional |
| SG1 | 0 | SG1 | Optional |
| RFF | 1 | A segment containing references relating to the whole message. | Mandatory |
| DTM | 1 | A segment specifying the date that applies to the previous reference. | Optional |
| SG2 | 0 | SG2 | Optional |
| NAD | 1 | A segment providing name and address of the parties related to the message (sender, receiver, airline, agent). | Mandatory |
| RFF | 1 | A segment indicating any additional reference for the party identified in the preceding NAD segment. | Optional |
| COM | 1 | A segment containing communication information for the party identified in the preceding NAD segment. | Optional |
| LAN | 1 | A segment indicating the language to be used by the party identified in the preceding NAD segment. | Optional |
| SG3 | 1 | SG3 | Optional |
| CTA | 2 | A segment identifying a person or a department for the party specified in the preceding NAD segment, and to whom the communication should be directed. | Mandatory |
| COM | 2 | A segment providing communication information for the person or department identified in the preceding CTA segment. | Optional |
| LAN | 2 | A segment indicating the language to communicate with the person or department identified in the preceding CTA segment. | Optional |
| SG4 | 0 | SG4 | Optional |
| SEQ | 1 | A segment which provides a sequence number for later reference to a related service, product or beneficiary. | Mandatory |
| SG5 | 1 | SG5 | Mandatory |
| IMD | 2 | A segment identifying a particular product or service. | Mandatory |
| QTY | 2 | A segment specifying a quantity related to the service or product identified in the preceding IMD segment. | Optional |
| LAN | 2 | A segment indicating the language to be used for the requested service or product identified in the preceding IMD segment. | Optional |
| DTM | 2 | A segment to indicate any date and/or time pertaining to the service or product identified in the preceding IMD segment. | Optional |
| NAD | 2 | A segment specifying name and address information related to the service or product identified in the preceding IMD segment. | Optional |
| RFF | 2 | A segment containing reference relating to the service or product identified in the preceding IMD segment. | Optional |
| PCD | 2 | A segment containing percentage factors which relate to the service or product identified in the preceding IMD segment. | Optional |
| PAI | 2 | A segment specifying methods of payment relating to the service or product identified in the preceding IMD segment. | Optional |
| PYT | 2 | A segment specifying payment terms for the service or product identified in an associated IMD segment. | Optional |
| FII | 2 | A segment containing financial institution information relating to the service or product identified in the preceding IMD segment. | Optional |
| DIM | 2 | A segment providing dimensions which may be required for the provision of the service or product identified in the preceding IMD segment. | Optional |
| FTX | 2 | A segment for information in coded or clear form to provide any other information related to the service or product identified in the preceding IMD segment. | Optional |
| SG6 | 2 | SG6 | Optional |
| LOC | 3 | A segment containing location information pertaining to the service or product identified in the preceding IMD segment. | Mandatory |
| NAD | 3 | A segment providing name and address information relating to the information specified in the preceding LOC segment. | Optional |
| DTM | 3 | A segment providing date and/or time information relating to the information specified in the preceding LOC segment. | Optional |
| SG7 | 2 | SG7 | Optional |
| MOA | 3 | A segment containing the monetary amount to be paid by the sender for the service or product identified in the preceding IMD segment. | Mandatory |
| QTY | 3 | A segment specifying a quantity related to the service or product identified in the IMD segment. | Optional |
| SG8 | 2 | SG8 | Optional |
| RCS | 3 | A segment to specify types of requirements attached to the provision of a service. | Mandatory |
| FII | 3 | A segment containing financial institution information relating to the special conditions or requirements identified in the preceding RCS segment. | Optional |
| MOA | 3 | A segment containing the monetary amount to be paid by the sender for the special conditions or requirements identified in the preceding RCS segment. | Optional |
| RFF | 3 | A segment containing reference information relating to the special conditions or requirements identified in the preceding RCS segment. | Optional |
| FTX | 3 | A segment for information in coded or clear form to provide any other information related to the preceding RCS segment. | Optional |
| SG9 | 1 | SG9 | Optional |
| MEM | 2 | A segment specifying relationship between persons within a group. | Mandatory |
| SG10 | 2 | SG10 | Mandatory |
| NAD | 3 | A segment specifying name and address information related to the preceding MEM segment. | Mandatory |
| ATT | 3 | A segment specifying an attribute related to the preceding NAD segment. | Optional |
| RFF | 3 | A segment providing reference information related to the preceding NAD segment. | Optional |
| LAN | 3 | A segment providing language information which relates to the preceding NAD segment. | Optional |
| FTX | 3 | A segment for information in coded or clear form to provide any other information related to the preceding NAD segment. | Optional |
| COM | 3 | A segment providing communication information related to the preceding NAD segment. | Optional |
| SG11 | 3 | SG11 | Optional |
| CTA | 4 | A segment providing contact information related to the preceding NAD segment. | Mandatory |
| COM | 4 | A segment providing communication information related to the preceding CTA segment. | Optional |
| SG12 | 3 | SG12 | Optional |
| DOC | 4 | A segment indicating a type of document (e.g. passport, visa, driving licence, vaccination certificate, etc...) related to the preceding NAD segment. | Mandatory |
| LOC | 4 | A segment identifying the place of issue of the document referenced in the preceding DOC segment. | Optional |
| DTM | 4 | A segment indicating the date of issue of the document referenced in the preceding DOC segment. | Optional |
| SG13 | 3 | SG13 | Optional |
| PAI | 4 | A segment specifying a method of payment relating to the preceding NAD segment. | Mandatory |
| PYT | 4 | A segment providing payment terms related to the preceding PAI segment. | Optional |
| FII | 4 | A segment providing financial institution information relating to preceding PAI segment. | Optional |
| MOA | 4 | A segment providing monetary information (e.g. a rate request, maximum price, etc...) related to the preceding PAI segment. | Optional |
| RFF | 4 | A segment providing reference information related to the preceding PAI segment. | Optional |
| SG14 | 3 | SG14 | Optional |
| RCS | 4 | A segment to specify a type of requirement (e.g. special diet needs, handicapped facilities, etc...) related to the preceding NAD segment. | Mandatory |
| MOA | 4 | A segment providing a monetary amount related to the preceding RCS segment. | Optional |
| RFF | 4 | A segment containing reference information relating to the preceding RCS segment. | Optional |
| FTX | 4 | A segment specifying information in coded or clear form to provide any other information related to the preceding RCS segment. | Optional |
| UNT | 0 | A service segment ending a message, giving the total number of segments in the message (including the UNH & UNT) and the control reference number of the message. | Mandatory |
