
I have been able to embed the flow into a record detail page of the custom object (and access the fields via a record lookup in the flow, passing in the record ID) but this doesn't meet our business requirements which makes it a non-starter. This is the only "solution" I could seem to locate through various searches, but once again, doesn't meet the business requirements.
I can't seem to find definitively if this is even possible via the URL in communities. My only other option might be to build a visualforce page and place the flow in there but I don't know if the same limitation applies there as well and I would hate to spend the time building out the visualforce page if it is a functional limitation.
Any insight is appreciated.
9 answers

Mary,
That is exactly how I was able to get it to work within the record details on the embedded flow. I followed these instructions(https://developer.salesforce.com/docs/atlas.en-us.salesforce_vpm_guide.meta/salesforce_vpm_guide/vpm_distribute_external_community.htm)
The lookup worked but it presented the issue of having to be in the record detail page which was a non-starter.
BUT, I did find a solution! I created a flow action which is bound to a button that I have since added to the layout. The documentation here frames it in the context of an internal user but it works fine in the community:
https://trailhead.salesforce.com/en/content/learn/modules/screen_flow_distribution/screen_flow_distribution_action