- In the SharePoint Online, the entire file path should not be more than 400 characters which includes tenant name, site name, file name and folder name etc.
- When naming lists and libraries, points to consider: (1) Using short names or setting titles with characters and spaces in mind: finance-hr-combined-strategic-team-collaboration-area
(2) Remove any unnecessary or noise words such as area, team, combined; this keeps the URL shorter: finance-hr-strategic-collaboration
(3) Once created, you can rename the title to be in the originally descriptive manner with a clean URL.
(4) URL length is a premium, your tenant organization name, site URL, library URL all lower the amount of URL space remaining for folders and document titles.
References:
https://learn.microsoft.com/en-us/microsoft-365/community/sharepoint-naming-guidelines
https://harvard.service-now.com/ithelp?id=kb_article&sys_id=4e738c1ddbcfb708dffdbc32ba96190e
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