Attributes
List remembered merge tag fallbacks
GET/v1/attributes/fallbacks
Requires an API key with the attributes:read scope. About keys and scopes
The fallback last chosen for each merge tag in this workspace, so the editor can offer it wherever the tag is inserted. Editor memory only: a send uses the fallback written in the tag ({{ contact.firstName | default: "there" }}). A campaign or journey email skips a contact whose tag has neither a value nor one.
Returns
Returns 200 OK. Otherwise returns an error; Errors lists every code and which to retry.