thanks for your reply...
Actually it is the same opportunity.
I tried it again this morning, and now i get a different result. No error as above, but the error is:
The 'Create' method does not support entities of type 'activitypointer'.
To summarize, I am trying to create a Flow button that will send an email with an attachment. If i create the flow with the office365 action, it works great. the email goes out BUT it is not recorded in CRM.
So i am trying to create an activity record to send an email and then another flow that will trigger on that create and send the email. it is a little roundabout, but that is the only way I see to do it now. but if i cannot create the activity...
is there a better way?