| Value | Description | Notes |
|---|---|---|
| 01 | Publication date | Nominal date of publication |
| 02 | Embargo date | If there is an embargo on retail sales in this market before a certain date, the date from which the embargo is lifted and retail sales are permitted |
| 09 | Public announcement date | Date when a new product may be announced to the general public |
| 10 | Trade announcement date | Date when a new product may be announced for trade only |
| 11 | Date of first publication | Date when the work incorporated in a product was first published |
| 12 | Last reprint date | Date when a product was last reprinted |
| 13 | Out-of-print / deletion date | Date when a product was (or will be) declared out-of-print or deleted |
| 16 | Last reissue date | Date when a product was last reissued |
| 19 | Publication date of print counterpart | Date of publication of a printed book which is the print counterpart to a digital edition |
| 20 | Date of first publication in original language | Year when the original language version of work incorporated in a product was first published (note, use only when different from code 11) |
| 21 | Forthcoming reissue date | Date when a product will be reissued |
| 22 | Expected availability date after temporary withdrawal | Date when a product that has been temporary withdrawn from sale or recalled for any reason is expected to become available again, eg after correction of quality or technical issues |
| 23 | Review embargo date | Date from which reviews of a product may be published eg in newspapers and magazines or online. Provided to the book trade for information only: newspapers and magazines are not expected to be recipients of ONIX metadata |
| 25 | Publisher’s reservation order deadline | Latest date on which an order may be placed with the publisher for guaranteed delivery prior to the publication date. May or may not be linked to a special reservation or pre-publication price |
| 26 | Forthcoming reprint date | Date when a product will be reprinted |
| 27 | Preorder embargo date | Earliest date a retail ‘preorder’ can be placed (where this is distinct from the public announcement date). In the absence of a preorder embargo, advance orders can be placed as soon as metadata is available to the consumer (this would be the public announcement date, or in the absence of a public announcement date, the earliest date metadata is available to the retailer) |
| 28 | Transfer date | Date of acquisition of product by new publisher (use with publishing roles 09 and 13) |
| 29 | Date of production | For an audiovisual work (eg on DVD) |