Dear Customer,
Thank you for reaching out to us.
There are no restrictions to number of outputs in plan flow task. API requests only counted but not the number of output associated with each plan flow tasks.
Please note that, beginning in Release 9.5, all new or renewed subscriptions have access to public API endpoints on the Enterprise product edition only. Existing customers on non-Enterprise editions will retain access their available endpoints (Legacy) until their
subscription expires.
Document Reference: https://docs.trifacta.com/display/DP/API+Reference
Regards,
Rajesh.