Google Sheet contact list with no standard structure
Each team member has maintained their own format. One sheet has phone numbers in column B, another has them in column D. Some rows have email addresses, most do not. Company names are in some rows and absent from others. Lead source is recorded in a free-text notes column by one person and missing entirely from another person's sheet. Before any CRM import can proceed, this data needs to be standardised into consistent columns for name, email, phone number, company, and lead source. Without that standardisation, the CRM import wizard cannot map fields correctly, and the resulting contact records are incomplete from day one.