Project WGS84 to British National Grid with Geometry Service

[RichardBetts]

Hi Folks,

I'm trying to project an array of graphics in WGS84 (WKID:4326) to BNG (WKID:27700) using the geometry service.
The code works fine but the graphics I get back are all located about 100 metres to the west of where I would expect.

Im afraid I'm not too clued up on coordinate transformations. Can anyone tell me if I'm missing something?

Thanks

Richard

[MelitaKennedy]

Also, Esri does not support the TOWGS84 keyword, so you cannot rely on it to include a datum transformation.

Melita