Improve publishing to PubMed to give a single coverage statement for all portfolios active for the same title
The Publish to PubMed publishing profile outputs an xml file giving details of ejournal coverage per title. Where we have multiple active portfolios for a title, the output contains a set of "or" queries with the coverage for each portfolio, and these often overlap or duplicate each other. NLM will no longer accept files with these duplications and overlapping coverage statements and instead require a single coverage statement for each ISSN in the file.
Please add to the publishing profile the option to merge the various coverage statements to give a single start and end date per title that reflects the total coverage available for all the active portfolios for each title.

NLM PubMed Library LinkOut tools supports placing the library link resolver icon on every PubMed citation therefore PubMed no longer supports uploading the library holdings to PubMed.
For more information about how to setup PubMed Outside Tool to place a link on every PubMed record please see: https://www.ncbi.nlm.nih.gov/books/NBK3803/#related.Outside_Tool.
Due to the above Publishing to PubMed is deprecated and will not include any improvements.
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Skalk van der Merwe commented
I have once been through the process of manually editing our holdings file in order to make it acceptable to the NLM. I had to use many different methods, including MS Excell and Notepad++ plus over 40 hours of human time, inspecting the coverage dates, making sure you have the most earliest dates and the most latest date for a title.
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Sharon Robinson commented
I have twice been through the process of manually editing our holdings file in order to make it acceptable to the NLM. It took an unbelievable amount of time.