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Praetorian65 Force.com migration tool
Quick question, when deploying changes with the migration tool for lets say Accounts, if I dont specify a custom field will it be created, or will the tool just create the fields I specify and ignore the ones I dont?
The migration tool and metadata API perform an Upsert operation (matching on name). So whatever custom fields are in the Account.object file that you deploy will automatically be created (if they don't already exist in the target organization) or updated (if they do, but are different from the definition in the file).