supply constraints

Territorial supply constraints (TSCs) are alleged restrictions of parallel trade imposed by some multi-national manufacturers to prevent retailers and wholesalers from sourcing where they wish within the European Single Market.
The definition, terminology, prevalence and effects of such practices remain topics of contention. Critics also note that the debate often overlooks the role of retailers themselves in differentiating stock keeping units (SKUs) for their own private‑label products and varying prices for those products between borders. They point out that private‑label strategies routinely involve tailoring product ranges, packaging, and pricing to local markets—practices that are rarely scrutinised in the same way during TSC discussions.
The only major existing attempt at an EU-wide study on the issue to date, authored by consultancy VVA and published by the European Commission, consists of an often misquoted survey of 34 "large operators" in retail, whom the authors noted "may pose a selection bias". The study concludes that there is "no hard or documentary evidence [...] available" to attest for their existence. A 2022 critical analysis of the study notes how the original authors find the "very same cross-country retail price patterns for both branded manufacturers’ products and retailers’ private label products." As private labels are fully under the control of retailers, it concludes that the study's assumption that "a given part of the variation in wholesale prices observed across Member States is due to the possible existence of [manufacturer imposed] TSCs" is thus "untenable", and that "no policy conclusions" should be drawn from the flawed study.
In 2025, the European Commission included in its Single Market Strategy that it would "develop tools" — falling short of a legislative proposal — to act against "unjustified" Territorial Supply Constraints, citing the 2020 study with a "degree of uncertainty". It neither defined Territorial Supply Constraints, nor the concept of "unjustified TSCs".

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