Child flow error: The input body for trigger 'manual' of type 'Request' did not match its schema definition. Error details: 'Invalid type. Expected String but got Null.'.

[NielsL]

I'm trying to get a child flow to run, but I am running in to some errors which I can't find a way around. I haven't used child flows before, so it might be something simple that I am missing.

I am getting this error when I run the flow:

The input body for trigger 'manual' of type 'Request' did not match its schema definition. Error details: 'Invalid type. Expected String but got Null.'.

The manual trigger is temporary while testing and will be replaced by another trigger. However, I have used the Manual trigger many times without this error. Does the error have anything to do with the child flow?

This is my parent flow. It will list users, and then I want a child flow to run for each of those users:

[NielsL · Accepted solution]

I found the answer right after posting 🤦‍♂️

I use FetchXML for the List records action - and I forgot to include the email as an attribute there. Ah well, I hope someone else will benefit of the post at some point 🙂