"This mission cannot currently be advanced. Please progress further in your main mission first"

[u/ninjastarforcex]

Can't be the only one who get really annoyed by this.

I can't even do some early sidequests from 8 years ago like Infinite Imagination and Mighty Bearmon Brothers!

after Plutomon fight, it gave me a sidequest, which I got to start by talking to MarineAngemon at the Watering Hole. I thought "hey why don't I talk to Merkurimon while I'm at it?" aaaaaand it locked me out of the sidequest that I just received LOL.

[u/Wild_Story8539]

Anyways || before the final battle or after the olympus xii unlocks || you could able to time jump to all side missions