# Technical Support **URL:** https://community.crossref.org/c/tech-support/8.md?page=1 [Latest](https://community.crossref.org/latest.md) · [Categories](https://community.crossref.org/categories.md) · [Tags](https://community.crossref.org/tags.md) **Page:** 2 --- ## [Artículos sin fuente de financiamiento](https://community.crossref.org/t/articulos-sin-fuente-de-financiamiento/14649)
**Author:** [@leobardo](https://community.crossref.org/u/leobardo)\ **Replies:** 1\ **Last updated:** [22 October 2025 20:38 UTC](https://community.crossref.org/t/articulos-sin-fuente-de-financiamiento/14649 "2025-10-22T20:38:21Z")
Hola, para mejorar el porcentaje del Participation Reports, pide agregar los números de contratos e ID de las instituciones patrocinadoras, pero si los artículos no cuentan con financiamiento, ¿Qué se hace?, ¿en el XML p… --- ## [Registro de títulos de libro](https://community.crossref.org/t/registro-de-titulos-de-libro/14645)
**Author:** [@gjchipana](https://community.crossref.org/u/gjchipana)\ **Replies:** 1\ **Last updated:** [20 October 2025 23:34 UTC](https://community.crossref.org/t/registro-de-titulos-de-libro/14645 "2025-10-20T23:34:17Z")
Estimados Sres. Crossref, Por favor, pueden indicar cuál es el procedimiento para el registro de títulos de libro? no encuentro la opción en Crossref --- ## [Metadata Manager\_Access problems](https://community.crossref.org/t/metadata-manager-access-problems/14454)
**Author:** [@mkdifusion](https://community.crossref.org/u/mkdifusion)\ **Replies:** 2\ **Last updated:** [12 September 2025 11:42 UTC](https://community.crossref.org/t/metadata-manager-access-problems/14454 "2025-09-12T11:42:24Z")
Buenos días. No podemos acceder a la plataforma Metadata Manager. Estamos en mitad de un proceso de subida de metadatos de una publicación de estructura compleja. ¿Se sabe cuándo se podrá acceder a la misma? Muchas gra… --- ## [RESTAPI - Data model gaps for 'sub-works' (eg book-chapter)?](https://community.crossref.org/t/restapi-data-model-gaps-for-sub-works-eg-book-chapter/14409)
**Author:** [@tolan](https://community.crossref.org/u/tolan)\ **Replies:** 3\ **Last updated:** [3 September 2025 12:40 UTC](https://community.crossref.org/t/restapi-data-model-gaps-for-sub-works-eg-book-chapter/14409 "2025-09-03T12:40:08Z")
I am new to the RESTAPI, but have a fair amount of experience with the unixref and unixsd xml models. When using the rest api ‘works’ endpoint for a book-chapter doi (as an example) very limited information about the ‘c… --- ## ["Metadata Quality Check" often returning 503 errors](https://community.crossref.org/t/metadata-quality-check-often-returning-503-errors/14307)
**Author:** [@rob](https://community.crossref.org/u/rob)\ **Replies:** 3\ **Last updated:** [14 August 2025 17:47 UTC](https://community.crossref.org/t/metadata-quality-check-often-returning-503-errors/14307 "2025-08-14T17:47:29Z")
Over the last week or so I have been getting this maybe 7 out of 10 times I try to use https://data.crossref.org/reports/parser.html: 503 Service Unavailable No server is available to handle this request. --- ## [Fixing metadata after a publisher goes missing](https://community.crossref.org/t/fixing-metadata-after-a-publisher-goes-missing/14237)
**Author:** [@tito](https://community.crossref.org/u/tito)\ **Replies:** 6\ **Last updated:** [13 August 2025 15:56 UTC](https://community.crossref.org/t/fixing-metadata-after-a-publisher-goes-missing/14237 "2025-08-13T15:56:39Z")
Hi, I am new to this community, and I am not sure if I chose this category correctly. If I have chosen the wrong category, I would appreciate you pointing it out. I would like to ask the following question regarding t… --- ## [How and where to report registered but "broken" DOIs?](https://community.crossref.org/t/how-and-where-to-report-registered-but-broken-dois/14256)
**Author:** [@collinks](https://community.crossref.org/u/collinks)\ **Replies:** 1\ **Last updated:** [5 August 2025 19:58 UTC](https://community.crossref.org/t/how-and-where-to-report-registered-but-broken-dois/14256 "2025-08-05T19:58:36Z")
Hello! I feel like I should know this as a Crossref employee, but I’ve also come upon this question outside of and prior to my work with Crossref, so I figured it might be worth asking publicly since I didn’t already se… --- ## [Validation error states no doi was sent, but our logs show valid data was sent](https://community.crossref.org/t/validation-error-states-no-doi-was-sent-but-our-logs-show-valid-data-was-sent/13969)
**Author:** [@mklem](https://community.crossref.org/u/mklem)\ **Replies:** 3\ **Last updated:** [18 June 2025 20:16 UTC](https://community.crossref.org/t/validation-error-states-no-doi-was-sent-but-our-logs-show-valid-data-was-sent/13969 "2025-06-18T20:16:43Z")
Hi Crossref, I received a notification stating that our XML deposit with batch\_id “apsxref:068d3ef4-9ec0-4840-b763-cceadd916013” had an empty doi value. Our records show the doi associated with this batch\_id is “10.1103… --- ## [Problemas con el DOI](https://community.crossref.org/t/problemas-con-el-doi/3114)
**Author:** [@Steviana](https://community.crossref.org/u/Steviana)\ **Replies:** 8\ **Last updated:** [6 June 2025 19:39 UTC](https://community.crossref.org/t/problemas-con-el-doi/3114 "2025-06-06T19:39:36Z")
Apreciados tenemos dos problemas con el DOI que quisiéramos solucionar y necesitamos ayuda: Tenemos problemas con la ya existencia de un DOI y no nos permite colocar en los artículos. En algún momento pensamos que los… --- ## [TypeError: Cannot read properties of undefined (reading 'title')](https://community.crossref.org/t/typeerror-cannot-read-properties-of-undefined-reading-title/6176)
**Author:** [@LuciaFurtakova](https://community.crossref.org/u/LuciaFurtakova)\ **Replies:** 9\ **Last updated:** [5 June 2025 19:24 UTC](https://community.crossref.org/t/typeerror-cannot-read-properties-of-undefined-reading-title/6176 "2025-06-05T19:24:27Z")
Hello! I am trying to deposit articles, but after processing there is an error: “TypeError: Cannot read properties of undefined (reading ‘title’)”. The articles are written “accepted”, the DOIs work, but the articles are… --- ## [Received SQL error](https://community.crossref.org/t/received-sql-error/13869)
**Author:** [@mklem](https://community.crossref.org/u/mklem)\ **Replies:** 1\ **Last updated:** [29 May 2025 16:52 UTC](https://community.crossref.org/t/received-sql-error/13869 "2025-05-29T16:52:01Z")
I received an error from Crossref: batch\_id: apsxref:82eb80a2-48e9-4abc-83f6-0c14379496cb doi: 10.1103/PhysRevD.111.094041 msg: PreparedStatementCallback; uncategorized SQLException for SQL \[insert into xref.g… --- ## [Opaque DOIs considered harmful](https://community.crossref.org/t/opaque-dois-considered-harmful/13788)
**Author:** [@rdmpage](https://community.crossref.org/u/rdmpage)\ **Replies:** 4\ **Last updated:** [20 May 2025 04:34 UTC](https://community.crossref.org/t/opaque-dois-considered-harmful/13788 "2025-05-20T04:34:37Z")
I’d like to push back regarding CrossRef’s advice that DOIs should be “opaque identifiers”, e.g. Constructing your DOIs. The notion that we should generate DOIs that are deliberately “dumb”, such as random strings or nu… --- ## [Crossref test account prefixes](https://community.crossref.org/t/crossref-test-account-prefixes/13263)
**Author:** [@poppynicolette](https://community.crossref.org/u/poppynicolette)\ **Replies:** 4\ **Last updated:** [9 May 2025 16:25 UTC](https://community.crossref.org/t/crossref-test-account-prefixes/13263 "2025-05-09T16:25:41Z")
Hello all, I have a question regarding Crossref test account prefixes such as those found here: https://api.crossref.org/members?query=test%20accounts and https://api.crossref.org/members?query=Crossref Some of thes… --- ## [Emergency, unplanned maintenance, 2025 March 29 - 1100 to 1400 UTC](https://community.crossref.org/t/emergency-unplanned-maintenance-2025-march-29-1100-to-1400-utc/13497)
**Author:** [@ifarley](https://community.crossref.org/u/ifarley)\ **Replies:** 1\ **Last updated:** [29 March 2025 14:27 UTC](https://community.crossref.org/t/emergency-unplanned-maintenance-2025-march-29-1100-to-1400-utc/13497 "2025-03-29T14:27:52Z")
We’re experiencing slow processing times and a growing submission and query queue size, with some days’ old submissions still queued. Attempts to tune the database to improve performance have not yet resolved the issue. … --- ## [Redirecionamento do DOI](https://community.crossref.org/t/redirecionamento-do-doi/13489)
**Author:** [@rairaalves](https://community.crossref.org/u/rairaalves)\ **Replies:** 2\ **Last updated:** [28 March 2025 20:32 UTC](https://community.crossref.org/t/redirecionamento-do-doi/13489 "2025-03-28T20:32:54Z")
Olá a todos da Crossref, Estou com uma dúvida referente ao direcionamento dos DOIs e gostaria de ajuda. Gostaria de saber se há alguma desvantagem (de qualquer tipo) em fazer o direcionamento do DOI para a página do ar… --- ## [Problem with jats abstract](https://community.crossref.org/t/problem-with-jats-abstract/13237)
**Author:** [@neilmcn](https://community.crossref.org/u/neilmcn)\ **Replies:** 3\ **Last updated:** [24 February 2025 13:56 UTC](https://community.crossref.org/t/problem-with-jats-abstract/13237 "2025-02-24T13:56:23Z")
I am trying to include a paragraph of abstract in an XML upload. Namespaces are \ **Author:** [@Ceanne.B](https://community.crossref.org/u/Ceanne.B)\ **Replies:** 3\ **Last updated:** [24 February 2025 13:35 UTC](https://community.crossref.org/t/weird-landing-page-for-doi-15340-978-625-00-9894-3-3/13225 "2025-02-24T13:35:42Z") Hi ! While checking some DOIs from my zotero institution library i found this crossref DOI “10.15340/978-625-00-9894-3\_3” with a weird landing page and not the actual publication. I tought it could be useful to report i… --- ## [Registro de vários DOIs em apenas um arquivo XML é possível?](https://community.crossref.org/t/registro-de-varios-dois-em-apenas-um-arquivo-xml-e-possivel/13155)
**Author:** [@CBib-UFPEL](https://community.crossref.org/u/CBib-UFPEL)\ **Replies:** 1\ **Last updated:** [7 February 2025 18:59 UTC](https://community.crossref.org/t/registro-de-varios-dois-em-apenas-um-arquivo-xml-e-possivel/13155 "2025-02-07T18:59:50Z")
Se baixarmos todos os XML de uma só vez, eles ficarão todos em um único XML. Se jogarmos esse XML lá na CrossRef, ele aceita como válido todos os artigos que estão nesse XML? --- ## [Would like you to check query for partner journals, as it is not very performant](https://community.crossref.org/t/would-like-you-to-check-query-for-partner-journals-as-it-is-not-very-performant/13139)
**Author:** [@mkurowski](https://community.crossref.org/u/mkurowski)\ **Replies:** 1\ **Last updated:** [4 February 2025 22:57 UTC](https://community.crossref.org/t/would-like-you-to-check-query-for-partner-journals-as-it-is-not-very-performant/13139 "2025-02-04T22:57:34Z")
We had requested access to query data from 2 of our partner journals, we were granted an account and have compiled a query to pull the information needed. One of the journals works better than the other, but both will be… --- ## [Issues with pagination using API](https://community.crossref.org/t/issues-with-pagination-using-api/13032)
**Author:** [@mkurowski](https://community.crossref.org/u/mkurowski)\ **Replies:** 1\ **Last updated:** [17 January 2025 22:59 UTC](https://community.crossref.org/t/issues-with-pagination-using-api/13032 "2025-01-17T22:59:09Z")
We are trying to pull the entire file for a particular journal 1000 records at a time. It is returning everything fine, but there is duplication in the DOI’s that are returned, meaning that we are missing some because th… --- ## [Do I need an ISBN to publish conference proceedings?](https://community.crossref.org/t/do-i-need-an-isbn-to-publish-conference-proceedings/12808)
**Author:** [@rsmacleod](https://community.crossref.org/u/rsmacleod)\ **Replies:** 3\ **Last updated:** [17 December 2024 03:45 UTC](https://community.crossref.org/t/do-i-need-an-isbn-to-publish-conference-proceedings/12808 "2024-12-17T03:45:51Z")
Hi Friends, We are a small society (Computing in Cardiology) and have previously published under the IEEE umbrella, but their fees have become excessive so we wish to self-publish. For over a decade, we have hosted in … --- ## [References not showing up](https://community.crossref.org/t/references-not-showing-up/2302)
**Author:** [@DrJamesWood](https://community.crossref.org/u/DrJamesWood)\ **Replies:** 26\ **Last updated:** [16 December 2024 22:56 UTC](https://community.crossref.org/t/references-not-showing-up/2302 "2024-12-16T22:56:41Z")
I have published two articles a good high ranking journals. My first published in January has been cited by good journals 5 times, and 7 times all together but crossref is only showing 1 citation. The second article has… --- ## [How to format the API key in headers for Speakatoo integration?](https://community.crossref.org/t/how-to-format-the-api-key-in-headers-for-speakatoo-integration/12687)
**Author:** [@avatar039](https://community.crossref.org/u/avatar039)\ **Replies:** 1\ **Last updated:** [28 November 2024 11:05 UTC](https://community.crossref.org/t/how-to-format-the-api-key-in-headers-for-speakatoo-integration/12687 "2024-11-28T11:05:17Z")
I’m working on integrating Speakatoo’s services and need guidance on the correct way to include the API key in the headers. Does it require a specific format like Authorization: Bearer \ or another structure? Any… --- ## [Request Header required to retrieve items in BibTeX format](https://community.crossref.org/t/request-header-required-to-retrieve-items-in-bibtex-format/11988)
**Author:** [@MartinJOsborne](https://community.crossref.org/u/MartinJOsborne)\ **Replies:** 9\ **Last updated:** [31 October 2024 09:01 UTC](https://community.crossref.org/t/request-header-required-to-retrieve-items-in-bibtex-format/11988 "2024-10-31T09:01:42Z")
I would like to retrieve items from crossref.org in BibTeX format. I cannot find any instructions in the documentation, but a post on this forum by @ coelias on the thread CrossRef bibtex export & improving it - #5 by m… --- ## [Issue with Incorrect DOI Assignment for Book](https://community.crossref.org/t/issue-with-incorrect-doi-assignment-for-book/12316)
**Author:** [@RITHA](https://community.crossref.org/u/RITHA)\ **Replies:** 2\ **Last updated:** [7 October 2024 16:38 UTC](https://community.crossref.org/t/issue-with-incorrect-doi-assignment-for-book/12316 "2024-10-07T16:38:39Z")
We are currently facing an issue with the DOI allocation for a book titled “Knowledge Management in Economy, Technology and Education” (ISBN 978-606-95516-0-8). The DOI assigned is incorrect. It was given as 10.57017/202… --- ## [Questions about DOI Replacement and Citation Records: A Case between Preprints and Published Articles](https://community.crossref.org/t/questions-about-doi-replacement-and-citation-records-a-case-between-preprints-and-published-articles/12318)
**Author:** [@pedrohenriquenacross](https://community.crossref.org/u/pedrohenriquenacross)\ **Replies:** 1\ **Last updated:** [3 October 2024 21:45 UTC](https://community.crossref.org/t/questions-about-doi-replacement-and-citation-records-a-case-between-preprints-and-published-articles/12318 "2024-10-03T21:45:43Z")
Dear community members, I hope this message finds you well. I have some questions regarding the registration of a reference I found and would like to clarify them with you: https://api.crossref.org/works/http:/dx.doi.… --- ## [I can't log in to metadatamanager](https://community.crossref.org/t/i-cant-log-in-to-metadatamanager/12212)
**Author:** [@gorodetsky](https://community.crossref.org/u/gorodetsky)\ **Replies:** 3\ **Last updated:** [17 September 2024 19:15 UTC](https://community.crossref.org/t/i-cant-log-in-to-metadatamanager/12212 "2024-09-17T19:15:17Z")
I can’t log in with my password on metadatamanager. a.y.gorodetsky@rusvrach.ru --- ## [Ticket of the month - August 2024 - Submission logs can be log-ical...we promise](https://community.crossref.org/t/ticket-of-the-month-august-2024-submission-logs-can-be-log-ical-we-promise/12165)
**Author:** [@pdavis](https://community.crossref.org/u/pdavis)\ **Replies:** 0\ **Last updated:** [11 September 2024 14:57 UTC](https://community.crossref.org/t/ticket-of-the-month-august-2024-submission-logs-can-be-log-ical-we-promise/12165 "2024-09-11T14:57:48Z")
Once you have managed to celebrate getting the metadata and DOI sent to us through one of the various methods, then you might be thinking your DOI is registered and ready to go. Unfortunately there is another thing stan… --- ## [Регистрация DOI](https://community.crossref.org/t/doi/12154)
**Author:** [@Azamat](https://community.crossref.org/u/Azamat)\ **Replies:** 1\ **Last updated:** [10 September 2024 12:17 UTC](https://community.crossref.org/t/doi/12154 "2024-09-10T12:17:22Z")
Здравствуйте Зарегистрировал DOI выпуска неправильно ввел только префикс без суффикса 10.70239 и депонировал, как теперь изменить DOI выпуска. Что теперь делать? Работаю с платформой OJS 3.4.0 --- ## [Typo in IEEE conference name and proceedings title](https://community.crossref.org/t/typo-in-ieee-conference-name-and-proceedings-title/12095)
**Author:** [@injerto](https://community.crossref.org/u/injerto)\ **Replies:** 1\ **Last updated:** [6 September 2024 12:50 UTC](https://community.crossref.org/t/typo-in-ieee-conference-name-and-proceedings-title/12095 "2024-09-06T12:50:55Z")
The metadata for 10.1109/ICASSP.2006.1660780 has a typo in both the conference\_name and proceedings\_title fields. \2006 IEEE International Conference on Acoustics Speed and Signal Processing\