It's no wonder there are problems with EPSG if it's just as full of idiots as the PROJ crew... All the best! :D

Janne

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On 2026-07-22 18:06, SIMON Nicolas via PROJ wrote:
Even,

Thank you  for your checks.
What I wanted to share is the example of the modifications made by EPSG that led to corruption of the transformation data.
This raises questions about EPSG's validation process.

Nicolas
-----Message d'origine-----
De : Even Rouault <[email protected]>
Envoyé : mercredi 22 juillet 2026 13:28
À : SIMON Nicolas <[email protected]>; [email protected]
Objet : Re: [PROJ] EPSG release once more busted

Nicolas,

were based on geocs 4258, and EPSG proposed a new mix of
transformations
BD72 to ETRS89-BEL [BEREF2002] (1) (EPSG:1652) based on geocs 11063
BD72 to ETRS89-BEL [BEREF2002] (2) (EPSG:15928) based on geocs 11063
BD72 to ETRS89-BEL [BEREF2011] (3) (EPSG:8369) based on geocs 11215

I've just verified that the 12.059a update has reverted them back to using EPSG:4258 ETRS89.

can also be checked at:
- https://epsg.org/transformation_1652/BD72-to-ETRS89-1.html
- https://epsg.org/transformation_15928/BD72-to-ETRS89-2.html
- https://epsg.org/transformation_8369/BD72-to-ETRS89-3.html

Even

--
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