Two separate Group elements with mutually exclusive conditions provide the cleanest declarative control. One Group should execute only when updateBillingAddress is true and updateShippingAddress is false. The other Group should execute only when updateShippingAddress is true and updateBillingAddress is false. This enforces that only one address update path runs. A single OR condition would allow either or both flags to be true, so it cannot prevent simultaneous updates. A Try-Catch Block reacts after an error occurs; it is not the right way to express business-rule branching. An HTTP Action would add unnecessary external dependency. Integration Procedure blocks and groups are designed to run related steps conditionally, so mutually exclusive Group conditions are the correct structure.

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