are you sure that you add the DOI to the existing DOI if there is one? E.g. https://sandbox.zenodo.org/records/28821 has a doi https://doi.org/10.1155/1915/52945 or https://sandbox.zenodo.org/records/28819 has https://doi.org/10.5962/bhl.title.1681

[jhpoelen]

as mentioned by @myrmoteras

are you sure that you add the DOI to the existing DOI if there is one? E.g. https://sandbox.zenodo.org/records/28821 has a doi https://doi.org/10.1155/1915/52945 or https://sandbox.zenodo.org/records/28819 has https://doi.org/10.5962/bhl.title.1681

[jhpoelen]

https://sandbox.zenodo.org/records/28821 is associated to TaxoDros record version https://linker.bio/line:hash://md5/e83039fdbc676f9c9e915e08b0c8c2f1!/L1268-L1275

.TEXT;
aldrich, 1915
.A Aldrich, J.M.,
.J 1915
.S New American Species of Asteia and Sigaloessa.
.Z Psyche, Camb., Mass., 22:94-98.
.K ocr+ / p 811833
.P Aldrich, 1915.pdf

No DOI has been annotated in the record.

[jhpoelen]

Also, https://sandbox.zenodo.org/records/28819 is associated with TaxoDros record version https://linker.bio/line:hash://md5/e83039fdbc676f9c9e915e08b0c8c2f1!/L1259-L1267

.TEXT;
aldrich, 1905
.A Aldrich, J.M.,
.J 1905
.S A Catalogue of North American Diptera (or Two-winged
Flies).
.Z Smithson. misc. Collns, 46(1444):1-680.
.K ocr / p 8241:46
.P Aldrich, 1905.pdf

and no DOI has been associated in the TaxoDros record.

[jhpoelen]

Note that no doi has been added to:

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    "journal_title": "Smithsonian Miscellaneous Collections",
    "journal_volume": "46",
    "journal_pages": "1-680",
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    "references": [
      "Bächli, G. (2024). TaxoDros - The Database on Taxonomy of Drosophilidae hash://md5/4fa9eeed1c8cff2490483a48c718df02 hash://sha256/e05466f33c755f11bd1c2fa30eef2388bf24ff7989931bae1426daff0200af19 [Data set]. Zenodo. https://doi.org/10.5281/zenodo.10593902"
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nor

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    "referenceId": "aldrich, 1915",
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