In my research, I came across this UnofficialSF component:
https://unofficialsf.com/save-and-update-custom-metadata-records-using-flow/
There is a link to this YouTube video that is using older Flow pages, so it isn't totally clear what's going on.
https://www.youtube.com/watch?v=VdmSd4qemhs
I also found this:
https://help.salesforce.com/s/issue?id=a028c00000smLF8AAM
which contains a code snippet that I managed to get to work.
Is anyone using this Flow Action who can lend a helping hand?
Thanks,
Pierre
@Salesforce Flow Automation
After a few hours of trial & error, I got this to work. YAY!!!
Since this flow action actually creates a deployment, checking in Deployment Status helps figure out what's wrong.
Since I only have one single record in my custom metadata type, I need to update the AccountID field with the record ID of the account the user is viewing.
Attaching screenshots of what I ended up doing in Flow.