Was invited to assessment centre - 5 mins later, was told not eligible

I've never heard of such a situation, but if such the case, that's a major oversight on HR's part and I do hope they transfer your application to the appropriate scheme. Let us know how the situation evolved!

Unfortunately, not the outcome I was hoping for! Heard back from the Global Head of Early Talent and they're saying they can't transfer applications between programmes due to a "one application per campaign" policy.
Even though one of their managers literally confirmed that the advert I applied through "seems to be the advert for our graduate programme," they're still making me withdraw and reapply from scratch. Lose all my progress through the assessments and the AC invite.
Their response was very polite but basically "we appreciate your enthusiasm but those are the rules, please reapply." No acknowledgment that their misleading job description caused this whole mess in the first place. They've now taken down the original job posting lol.
Bit gutted tbh as I was literally about to go to AC, but I guess that's recruitment for you. Going to withdraw and reapply as instructed - they've said if the system auto-rejects it as a duplicate they'll reactivate it, so at least there's that.
Moral of the story: always double and triple check whether something says "internship" or "graduate scheme" even if the description makes zero sense!
Thanks for the support though, appreciate it. I've also never heard of a situation like this.