Is this statement correct about writing and executing source mapping rules to populate identity attributes?

The statement " All Identity Mappings must use a rule to set the identity attribute " is incorrect. While source mapping rules can be used to populate identity attributes dynamically, it is not mandatory for all identity mappings to rely on a rule. Identity mappings can also be configured using direct mappings, where attributes from a source are directly mapped to IdentityIQ attributes without any rule-based logic.

Therefore, the correct answer is B. No.