(e)
in the case of supply contracts for additional deliveries by the original supplier which are intended either as a partial replacement of supplies or installations or as the extension of existing supplies or installations, where a change of supplier would oblige the contracting entity to acquire supplies having different technical characteristics which would result in incompatibility or disproportionate technical difficulties in operation and maintenance;
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Source: EUR-Lex CELLAR · retrieved 2026-09-04 · Text as consolidated on 2026-01-01; changes after this date are not shown.