License to Maintain. In the event of clause 4.6.1(b), then, notwithstanding anything to the contrary in or under this Agreement, Supplier hereby grants to Customer and its Affiliates a perpetual, non- exclusive, worldwide, fully paid-up, license and right to, and to authorise third party service providers to, modify and create derivative works of the source code and related documentation of the relevant Software in order to maintain and/or enhance its functionality for the internal business purposes of Customer and its Affiliates.
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