As far as I know, there may be two reasons for these cases: 1. For each DOI, there has to be a "landing page" (URL) which has to be indicated when creating a DOI. Those who create DOIs are responsible to keep this information up to date (URLs may change). Some journals may not care about this. 2. Some predatory journals assign fake (non-existing) DOIs. DOIs are not free of charge, the journals have to pay for them, and some black sheep save themselves these costs.

Dear Scholar, its quite common that some or the other time we face errors in accessing DOI.

"I have come across instances where published articles, for which DOIs have already been assigned, sometimes display DOI errors when attempting to access them."

Can you share us some of those DOI errors?

Dear Vanlalruata Hnamte ,

The good news is that the somewhat ‘older’ papers in the mentioned journal all have a genuine DOI nr assigned (which works properly). So, within a month or two the DOI links most likely will be active. Furthermore, the metrics service for each paper includes PlumX and Dimensions.

However, I see some disturbing things as well:

-The publisher behind the journal “Indian Society of Education and Environment” is mentioned in the Beall’s list of potential predatory publishers (https://beallslist.net )

-The indexing info https://indjst.org/indexing-and-abstracting mentions a number of so-called misleading metrics (https://beallslist.net/misleading-metrics/ ) these are often used by predatory journals/publishers

-The indexing info prominently depicts a logo of WoS suggesting a serious indexing (ESCI/SCIE) while they are only indexed in Zoological Records, this is at least misleading

-The indexing info includes a logo of UGC CARE which is misleading since they are no longer listed/approved (https://ugccare.unipune.ac.in/apps1/home/index )

-Looking at https://www.scopus.com/sourceid/21100201522 it is clear why they are discontinued (click on Scopus content coverage and see the suspicious increase in accepted and published papers in 2016)

So, a somewhat mixed picture. They used to be focused on the wrong things (publish as much as possible thanks to there Scopus indexing). They seem to try to do better, and the number of papers published every year seems to be normalized (https://www.scilit.net/publishers/3283 ).

Best regards.

Dear Valnalruta Hnamte

Yes I have ever experienced the same and it is inconveniencing when you needed the resource urgently. I would personally wish to know why that happens and the alternative of the same

Dear colleagues,

I have the following problem: When I enter the Doi from my article nto the search engine (e.g google) the link to the article normally appears. But clicking on the doi from my article which is uploaded on researchgate shows an error. Can somebody help me?