If you are seeing a Salesforce Duplicate Error in your CRM import, the below outline will help you to troubleshoot these issues.
Why you are seeing this Salesforce error?
You are seeing this error because your Salesforce is set up with one or more duplicate rules or matching rules, or a combination of both, on either an account, contact or lead. Depending on how these rules are set up, they can be triggered either when updating a record or creating a new record in Salesforce, depending on how the rule is set up. They can also be triggered by records enforced by the rule(s) that you may or may not have access to (depending on your permissions in Salesforce), depending on the record level security settings in your Salesforce.
Salesforce matching/duplicate rules can match on a number of different conditions and combinations of fields on a record. Depending on how your team has the rules set up, duplicate rules can also have several matching rules under them that reference other Salesforce objects. It’s very important to talk to your Salesforce administrator, or whoever manages these rules, to see why this is happening in comparison to the record you are trying to import and the rules and records preventing the import.
Link to duplicate rules Salesforce help article in Salesforce:
Link to matching rules Salesforce help article in Salesforce: