DOI and ISSN required
When submitting an article I have found that the ISSN and DOI are now required in APA 6. However, when Zotero retrieves bibliographic data from a web page it never includes these fields, so I've had to go back through several hundred items to enter them manually. Is there any way of ensuring that Zotero captures these fields?
Could you please explain what you mean by "what database"? I'm just using Zotero without any other databases.
This question requests the site from which you imported the citation (journal publisher's site, PubMed, WoS, Scopus, EBSCO, JSTOR, etc.)
Some sites' metada include the issn while others do not. Still others provide oddly formatted ISSNs.
While I have heard of authors being asked to provide information (inclusing the ISSN) about a journal that is unknown to the editor and reviewers, I have not seen a journal's ISSN in article reference lists in any journal. I have seen agency and NGO reports that contain a Source List in addition to the refence list. The source list includes the names of all serials, reports, and books with each publisher's full address, book ISBNs, and serial ISSNs.
If you point us to translators/databases that don't, we'll see what we can do - though in many cases it's just not possible (e.g. google scholar).
In general, you will need to check your data for completeness to make sure Zotero has everything you need, there is no automated way to do that.