Hi Sam,
It looks like the issue is with the type of ID you are using in the API call. The fullTextXML module requires the PMC ID (which starts with 'PMC_'). The PMCIDs (
PubMed Central IDs) are specific identifiers
for full text articles.
Example, for the article id
39040661, the corresponding pmc id is
PMC11260570
Api: https://www.ebi.ac.uk/europepmc/webservices/rest/PMC11260570/fullTextXMLHope this helps, let us
know if you have further queries.
Kind regards,
Madhu