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Hello,
Thanks for writing back and explaining, as far as I know, there shouldn't be any syntax for editing the list item based on the own ID in the form because when I check the URL when editing the specific item in the SharePoint list, the URL syntax has its own item ID, Source, ContentTypeID but no Item fields in URL. Even I did searching to find out the result but couldn't find any solution to meet the requirement, so I request you post your concern in Microsoft Q & A communityto get help from experts.
Appreciate your understanding and stay safe!!
Best Regards,
Chitrahaas