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- The contact data must be cleaned: Adress must be correst, duplicated must be removed, older data must be deleted
- The structure types, if any, must have been defined (see Setting a criteria or a structure type to a contact Define criteria's for the contacts )
- The criteria and criterion elements must have been defined (see /wiki/spaces/DOCEN/pages/41620787 Setting a criteria or a structure type to a contact )
- Each contact has a contact number. New contact must have new contact numbers. A specific range is reserved for existing contact numbers (How to know this range ? SecuTix or tzhe customer atgive contact number ?).
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