After a migration from On-Prem to SaaS, the Spoolhost is not automatically defined on SAP systems.
(this field is mandatory on creation of new SAP systems, but not mandatory during migration)
This will eventually result in SAP output files being stored on the Central Server
Edit Environment > SAP > [system] and fill in Spoolhost value
This issue will be fixed in a future version where a start of the SAP Process Server should fail when Spoolhost value is empty