Hi @asmecher Thanks for your warning.
Since August (8.th month) is an active month especially for triannual journals, I needed a quick solution for DOI registration, and wanted to share it. In order to get DOIs via Crossref plugin, I had to disable ORCID profile plugin, and remove ORCID iD values from each contributer manually (empty the ORCID iD field). I don’t know which plugin cvc-complex-type.2.4.d error is originating from (Crossref DOI plugin, ORCID profile plugin, or CrossrefReferencelinking Plugin). I will be following your work.
Best regards,