Mickey (GivEnergy)
Thanks for the reply. I just entered the data again with a 'refreshed' API key and it failed the same. I then repeated the process a further 9 times with 'new' API keys with the same result, so I don't think in my case it can be solved by simply regenerating.
I have taken this-up with both George at Givenergy support and also with Octopus Energy helpdesk (though unsuccessful in reaching someone who understood the problem). I then reached Sam Driver at Givenergy (Developers) who asked for screenshots which I emailed to support@givenergy.co.uk. Sam told me he will further investigate.
Do you think I should try repeatedly submitting the data with regenerated APIs? Otherwise, does anyone there have a direct access number to Octopus developers please, if Sam can't solve it on my behalf?
Many thanks, Andy