A clean address book, step by step
Before importing, agree on one column template: company, person, title, mobile, landline, email, city and tag. Convert each department’s file to that template so the import wizard maps columns correctly.
Mobile numbers are the best duplicate key in Iran’s market, because company names are written in many ways. Fidar converts Persian digits and normalises formats automatically, but entering numbers consistently from the start helps.
Keep tags few and rule-based: industry, region and relationship type are usually enough. Dozens of ad-hoc tags make filters useless. Make one person responsible for contact data quality and have them review the incomplete-records report monthly.