Issue
Attempts to create an external audience in Segment for Marketo fail, and the audience is not generated. The Marketo destination may display as "incomplete" in the Segment Console, and repeated creation attempts do not succeed.
Product
Segment
Environment
Segment Console
Cause
Marketo requires static list names to be globally unique. If a static list with the same name already exists in Marketo, the creation request from Segment will be rejected, preventing the external audience from being created.
Resolution
Rename or delete the existing static list in Marketo to free up the desired name, or update the audience name in Segment to ensure it is unique. After resolving the naming conflict, retry the audience creation process.