In cases where the same vendor has been entered in darwin multiple times, there is a function that allows users to merge profiles with the same name. (Note, this tool cannot be used for people of type Employee or Agent)
Users that will use this function must have the Security Role Action - People > Basics > Allow Find Duplicates
To find duplicates:
If there is a duplicate record that is not showing on the 'find duplicates' tab:
For agent or employee profiles that cannot be merged, the profile can be deactivated and the name can be modified by adding the word "duplicate" in the last name or company name field.