In the context of a flow from one Salesforce environment to another, I'm encountering a few instances where mapping to a Picklist or Multi-select picklist provokes a Salesforce error like "bad value for restricted picklist field: C2", where "C2" is a valid option for the destination picklist. Un-restricting these fields seems to allow it to map properly and when I observe the destination record, it has the appearance that the correct field option(s) was/were selected. It doesn't happen for all picklists.
@geofftipley874 sharing this Salesforce article in case it helps.
@anithaabraham I forgot to say sooner: thank you! We didn't consider that removing the default might be the fix! We had already removed restrictions and currently that's what we're going with. Thanks