ID:303006 Top-level entity "<name>" is exported as a black box entity

CAUSE: You specified a formal verification tool for the current project and compiled the design, but did not create design partitions for the top-level design entity. As a result, it will be treated as a black box in the Quartus Prime-generated Verilog design file for the formal verification tool.

ACTION: Create design partitions for the top-level design entity and then recompile the design.